JPS59211557A - Heat-resistant steel - Google Patents

Heat-resistant steel

Info

Publication number
JPS59211557A
JPS59211557A JP8576383A JP8576383A JPS59211557A JP S59211557 A JPS59211557 A JP S59211557A JP 8576383 A JP8576383 A JP 8576383A JP 8576383 A JP8576383 A JP 8576383A JP S59211557 A JPS59211557 A JP S59211557A
Authority
JP
Japan
Prior art keywords
steel
heat
strength
less
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8576383A
Other languages
Japanese (ja)
Inventor
Tetsuo Kato
哲男 加藤
Susumu Isobe
磯部 晋
Kenkichi Matsunaga
松永 健吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP8576383A priority Critical patent/JPS59211557A/en
Publication of JPS59211557A publication Critical patent/JPS59211557A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To improve the strength of a heat-resistant high-Mn steel at high temp. as well as the corrosion resistance by adding specified amounts of Cr and Ni to the steel, precipitating V carbonitride, and adding Mo and/or Al furthermore. CONSTITUTION:This heat-resistant high-Mn steel contains 0.5-1.0% C+N, <1.0% Si, 8-20% Mn, 5-20% Cr, 0.5-5% Ni and 0.2-2% V as essential components and 0.3-3.5% Mo and/or 0.5-4% Al. To the steel may be added one or more among 0.1-2% Ti, 0.1-3% W and 0.1-3% Nb+Ta and/or 0.01-0.2% Zr and/or 0.001-0.02% B. The steel has superior strength at high temp. and superior corrosion resistance, and it is suitable for use as the material of valves for an internal-combustion engine.

Description

【発明の詳細な説明】 この発明は、高温強度および耐食性に優れ、特に内燃機
関の動弁機構部品であるバルブ用材料として優れた特性
を有する高Mn系の耐熱鋼に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-Mn heat-resistant steel that has excellent high-temperature strength and corrosion resistance, and has particularly excellent properties as a material for valves, which are valve train components of internal combustion engines.

従来、ガソリンエンジンやディーゼルエンジン等の内燃
機関の排気バルブには、2l−2N鋼(C:0.55%
、St:≦0.25%、Mn:8.5%、Ni:2%、
Cr:21%、N:0゜3%、S:0.04%)や、2
1 L−4N鋼(SUH36鋼)(Coo。53%、S
i:≦0.75%、Mn:9.0%、Ni:4%、Cr
:21%、N:0.4%、S:0.06%)などの耐熱
鋼が多く用いられてきた。しかしながら、従来の耐熱鋼
では、Crを21%前後含有しているため、戦略物質で
ありしかもCrの産出国が限られていることからその入
手に大きな不安があるという問題点があった。
Conventionally, 2l-2N steel (C: 0.55%) has been used for exhaust valves of internal combustion engines such as gasoline engines and diesel engines.
, St:≦0.25%, Mn: 8.5%, Ni: 2%,
Cr: 21%, N: 0°3%, S: 0.04%), 2
1 L-4N steel (SUH36 steel) (Coo.53%, S
i:≦0.75%, Mn: 9.0%, Ni: 4%, Cr
:21%, N:0.4%, S:0.06%) have been widely used. However, since conventional heat-resistant steel contains around 21% Cr, it is a strategic material and there are a limited number of countries where Cr can be produced, so there is great concern about its availability.

この発明は、上記した従来の問題点に着目してなされた
もので、Cr含有量を少なくしたときでも高温強度およ
び耐酸化性に優れており、価格ならびに原料入手の上で
有利であると共に、現用の排気バルブ用鋼とほぼ同等の
高温疲労強度を肴し、排気/ヘルプ用材料あるいは耐熱
ボルト用材料として好適に使用することができる耐熱鋼
を提供することを目的としている。
This invention was made in view of the above-mentioned conventional problems, and has excellent high-temperature strength and oxidation resistance even when the Cr content is reduced, and is advantageous in terms of cost and raw material availability. The purpose of the present invention is to provide a heat-resistant steel that has almost the same high-temperature fatigue strength as current exhaust valve steel and can be suitably used as an exhaust/help material or a heat-resistant bolt material.

すなわち、この発明による耐熱鋼は、重量%で、 C+N:0.5〜1.0%、 Si:1.0%以下、Mn:8〜20%Cr: 5〜2
0%、Ni:0.5〜5%V:0.2〜2%を基本組成
とし、− M o : 0 、3〜3.5%、A文二0.5〜4%
のうちの1種または2種を含み、 さらに使用目的等に応じて、 Ti:011〜2%、W:0.1〜3%。
That is, the heat-resistant steel according to the present invention has, in weight percent, C+N: 0.5 to 1.0%, Si: 1.0% or less, Mn: 8 to 20%, Cr: 5 to 2.
The basic composition is 0%, Ni: 0.5-5%, V: 0.2-2%, - Mo: 0, 3-3.5%, A Bunji 0.5-4%.
Containing one or two of these, depending on the purpose of use, Ti: 011-2%, W: 0.1-3%.

Nb+Ta:0.1〜3%のうちの1種または2種以上
、 Zr:0.01〜0.2%。
Nb+Ta: one or more of 0.1-3%, Zr: 0.01-0.2%.

B:0.OO1〜0,02%のうちの1種または2種を
含有し、残部Feおよび不純物からなることを特徴とし
、高Mn鋼において炭窒化物〔V(C、N) )を適量
形成させることによって強度の改善をはかると共に、M
o、AMの1種以上を添加することによってとくに高温
での短時間引張強度およびクリープ破断強度を著しく向
上させたものであり、高負荷の排気バルブ、耐熱ボルト
B:0. It is characterized by containing one or two of 1 to 0.02% OO, with the remainder consisting of Fe and impurities, and by forming an appropriate amount of carbonitrides [V(C,N)] in high Mn steel. In addition to improving strength, M
By adding one or more of AM and o, the short-time tensile strength and creep rupture strength at high temperatures are significantly improved, and the product is used for high-load exhaust valves and heat-resistant bolts.

耐熱部品等に適するものであることを特徴とじている。It is characterized by being suitable for heat-resistant parts, etc.

以下、この発明の耐熱鋼の成分範囲(重量%)の限定理
由について説明する。
The reasons for limiting the range of components (wt%) of the heat-resistant steel of the present invention will be explained below.

C+N (炭素+窒素)’ : 0 、5〜t、o71
0CおよびNはVと結合して炭窒化物を形成することに
より母材の強度を高めるのに有効な元素であって、この
ためにはCおよびNの合計で0,5%以上含有させるこ
とが必要である。しかし、多量に含有すると耐食性か劣
化するばかりでなく、靭性も低下するので1,0%以下
とする必要がある。
C+N (carbon+nitrogen)': 0, 5~t, o71
0C and N are effective elements for increasing the strength of the base metal by combining with V to form carbonitrides, and for this purpose, the total content of C and N must be 0.5% or more. is necessary. However, if it is contained in a large amount, not only the corrosion resistance deteriorates but also the toughness decreases, so it is necessary to limit the content to 1.0% or less.

Si(けい素):1.0%以下 Siは溶解精錬時の脱酸成分として有効な元素であるが
、多量に含有すると靭性が劣化し、被削性やPbOlt
食性も低下するので1.0%以下とする必要がある。
Si (silicon): 1.0% or less Si is an effective element as a deoxidizing component during melting and refining, but if it is contained in a large amount, toughness deteriorates, machinability and PbOlt
Since the edibility also decreases, the content must be kept at 1.0% or less.

Mn(マンガン)二8〜20% Mnは組織をオーステナイト化して高温強度の向上をは
かるのに有効な元素であるが、8%未満ではオーステナ
イトか不安定となるので8%以上含有させることが必要
である。しかし、多量に含有すると耐酸化性が劣化する
ので20%以下とする必要がある。
Mn (manganese) 28-20% Mn is an effective element for austenitizing the structure and improving high-temperature strength, but if it is less than 8%, it becomes austenite or unstable, so it is necessary to contain it at 8% or more. It is. However, if it is contained in a large amount, the oxidation resistance deteriorates, so it is necessary to keep it at 20% or less.

Cr(クロム):5〜20% Crは耐熱鋼として要求される耐食性や耐酸化性を確保
するために必要な元素であり、とくに排気用バルブに要
求される耐酸、耐食性の向上に有効な元素であって、こ
のためには5%以上含有させることが必要である。しか
し、あまり多量に含有させるとオーステナイト相が不安
定になり高温強度が低下するため、20%以下とする必
要がある。しかし本発明は省Crの観点から出来る限り
Cr使用量を減らすことを目的としているため15%以
下とすることがより望ましい。
Cr (Chromium): 5-20% Cr is an element necessary to ensure the corrosion resistance and oxidation resistance required for heat-resistant steel, and is particularly effective in improving the acid resistance and corrosion resistance required for exhaust valves. For this purpose, it is necessary to contain 5% or more. However, if the content is too large, the austenite phase becomes unstable and the high-temperature strength decreases, so the content needs to be 20% or less. However, since the present invention aims to reduce the amount of Cr used as much as possible from the viewpoint of saving Cr, it is more desirable that the amount of Cr be 15% or less.

Niにッケル):0.5〜5% Niはオーステナイトの安定化に寄与する元素であり、
このためには0.5%以上含有させる必要がある。しか
し、多量に含有させてもオーステナイト安定化の効果は
飽和し価格の上昇を来たすだけであるので5%以下とす
る必要がある。なお、Coもオーステナイトの安定化に
寄与する元素であり、Niの一部をCoで置きかえても
良い。
Ni): 0.5 to 5% Ni is an element that contributes to stabilizing austenite,
For this purpose, it is necessary to contain 0.5% or more. However, even if it is contained in a large amount, the effect of stabilizing austenite will be saturated and the price will only increase, so it is necessary to limit the content to 5% or less. Note that Co is also an element that contributes to stabilizing austenite, and a portion of Ni may be replaced with Co.

■(バナジウム):0.2〜2% VはCおよびNと結びついて炭窒化物を析出することに
より高温強度を改善するのに有効な元素であり、このた
めには0.2%以上含有させることが必要である。しか
し、多すぎると固溶化処理温度を高める必要が生ずると
共に靭性や伶腓鍛造性を劣化させるので2%以下とする
必要がある。
■(Vanadium): 0.2-2% V is an effective element for improving high-temperature strength by combining with C and N to precipitate carbonitrides, and for this purpose it is necessary to contain 0.2% or more. It is necessary to do so. However, if it is too large, it becomes necessary to increase the solution treatment temperature and the toughness and forgeability are deteriorated, so it is necessary to keep it at 2% or less.

Mo(モリブデン):0.3〜3.5%、A文(アルミ
ニウム)ぺ0.5〜4%のうちの1種または2種 MOおよびAMは高Mnオーステナイト鋼における高温
引張強度および高温クリープ破断強度等の高温強度を著
しく向上させるのに有効な元素である。また、A見はA
!L2o3皮膜を形成し、て耐酸化性をより一層向上さ
せるのに寄与する元素である。そして、このような効果
を得るためには、MOについては0.3%以上、A文に
ついては0.5%以上含有させることが必要である。し
かし、Mo含有量を多くしても強度改善の向上が大きく
なく、かえって高価につくので3.5%以下とする必要
があり、A4含有量が多すぎるとこのAlは酸素との親
和力が強いために製造性を悪化させるので4%以下とす
る必要がある。したがって、MoおよびA文については
、Mo:0・3〜3.5%、Al:0.5〜4%の範囲
で1種または2種を含有させる。
Mo (molybdenum): 0.3 to 3.5%, A (aluminum) 0.5 to 4%, one or two types MO and AM are high temperature tensile strength and high temperature creep rupture in high Mn austenitic steel. It is an effective element for significantly improving high-temperature strength such as strength. Also, A view is A
! It is an element that forms an L2o3 film and contributes to further improving oxidation resistance. In order to obtain such an effect, it is necessary to contain 0.3% or more of MO and 0.5% or more of A sentence. However, even if the Mo content is increased, the improvement in strength is not large and it is rather expensive, so it must be kept below 3.5%.If the A4 content is too high, this Al has a strong affinity with oxygen. Therefore, it is necessary to keep the content to 4% or less since it deteriorates the manufacturability. Therefore, for Mo and A, one or two of them are contained in the range of Mo: 0.3 to 3.5% and Al: 0.5 to 4%.

Ti (チタン):0.1〜2%、W(タングステ:/
):0.1〜3%、Nb十Ta(−オブ+タンタル):
0.1〜3%のうちの1種または2種以」二 Ti、W、Nb、Taはいずれも高温強度を依善するの
に有効な元素であり、このような効果を得るためには、
Tiについてはo、1%以上、Wについては0.1%以
上、Nb+Taについては0.1%以上含有させること
が必要である。しかし、多量に含有するとオーステナイ
トが不安定になると共に、靭性や加工性を害するので、
Tiについては2%以下、Wについては3%以下、Nb
+Taについては3%以下とする必要があり、これらの
範囲内でTi、W、Nb+Taの1種または2種以上を
含有させる。
Ti (titanium): 0.1-2%, W (tungsten: /
): 0.1-3%, Nb + Ta (-of + tantalum):
One or more of 0.1 to 3% of Ti, W, Nb, and Ta are effective elements for improving high-temperature strength, and in order to obtain such effects, ,
It is necessary to contain 1% or more of Ti, 0.1% or more of W, and 0.1% or more of Nb+Ta. However, if it is contained in large amounts, austenite becomes unstable and impairs toughness and workability.
2% or less for Ti, 3% or less for W, Nb
+Ta needs to be 3% or less, and one or more of Ti, W, and Nb+Ta is contained within this range.

Zr(ジルコニウム)二〇、01〜0.2%。Zr (zirconium) 20,01-0.2%.

B(ボロy):0.001〜0.02%のう501種ま
たは2種 ZrおよびBはオーステナイト結晶粒界に選択的に存在
してクリープ破断強度を改善する粒界強化元素としての
作用を有するので、必要に応じて、Zrについては0.
01%以上1より望ましくは0.03%以上、Bについ
ては0.001%以上、より望ましくは0.003%以
上含有させる。じかし、Zr、Bを多量に含有・させて
も効果の上昇はみられずかえって製造性を悪化させるの
で、Zr”)いては0.2%以下、より望ましくは0.
1%以下、Bについては0.02%以下、より望ましく
は0.01%以下とする。
B (boroy): 0.001 to 0.02% of 501 or 2 types Zr and B exist selectively at austenite grain boundaries and act as grain boundary strengthening elements that improve creep rupture strength. Therefore, if necessary, Zr can be adjusted to 0.
B is contained in an amount of 0.01% or more, preferably 0.03% or more, and B is contained in an amount of 0.001% or more, more preferably 0.003% or more. However, even if a large amount of Zr or B is contained, no increase in effectiveness is observed, and on the contrary, it worsens manufacturability.
The content of B is 1% or less, and B is 0.02% or less, more preferably 0.01% or less.

このほか、鋼の被削性を改善するために、S:0.03
〜0.3%、Ca:0.001〜0.02%のうちの1
種または2種以上を含有させるのも良い。また、耐酸化
性をさらに向上させるために、Cu:0.3〜2%、R
EM:0.001〜0.05%のうちの1種以上を含有
させるのも良い。
In addition, in order to improve the machinability of steel, S: 0.03
~0.3%, Ca: 1 of 0.001-0.02%
It is also good to contain a species or two or more species. In addition, in order to further improve oxidation resistance, Cu: 0.3 to 2%, R
EM: It is also good to contain one or more of 0.001 to 0.05%.

次に、この発明の実施例を比較例とともに説明する。Next, examples of the present invention will be described together with comparative examples.

表1に示す化学成分を有する本発明鋼A−Gおよび比較
鋼H−Jを各々50kg高周波誘導炉で30kg鋼塊に
溶製したのち造塊し、続いて、鍛伸および圧延によって
直径16+nmの丸棒にした。次いで、各丸棒に対し、
比較鋼Jを除いて、1100°C×30分の水冷、70
0°C×5時間空冷の熱処理を施した。また、比較鋼J
は現用の排気バルブ鋼(SUH36)テアリ、Jのみに
ついて、1050”(!X1時間水冷、760°C×1
0時間空冷の熱処理を施した。その後、各供試鋼につい
て、(1)高温引張特性、(2)高温疲れ強さ、(3)
耐酸化性な調べた。
Inventive steels A-G and comparative steels H-J, each having the chemical composition shown in Table 1, were melted into 30kg steel ingots in a 50kg high-frequency induction furnace, and then formed into ingots, and then forged and rolled to a diameter of 16+nm. I made it into a round bar. Then, for each round bar,
Except for comparison steel J, water cooling at 1100°C x 30 minutes, 70
Heat treatment was performed by air cooling at 0°C for 5 hours. Also, comparative steel J
is the current exhaust valve steel (SUH36) Teari, J only, 1050" (!X1 hour water cooling, 760°C
Heat treatment was performed by air cooling for 0 hours. After that, for each test steel, (1) high temperature tensile properties, (2) high temperature fatigue strength, (3)
Oxidation resistance was investigated.

(1)高温引張特性 ′内燃機関用のバルブは、作動中にバルブスプリングの
反発力によって繰返し打撃を受けるため、バルブ素材に
は作動温度付近における優れた引張特性が要求される。
(1) High temperature tensile properties' Valves for internal combustion engines are repeatedly struck by the repulsive force of the valve spring during operation, so the valve material is required to have excellent tensile properties near the operating temperature.

そこで、表1の各供試鋼について、700’Cにおける
高温引張特性を調査した。その結果を表2に示す。
Therefore, the high temperature tensile properties at 700'C were investigated for each of the test steels in Table 1. The results are shown in Table 2.

表      2 表2に示すように、0.2%耐力で比較すると、本発明
鋼A−Gはいずれも比較鋼H−J、とくに現用の排気バ
ルブ鋼である高Cr含有量の5UH36(21−4N、
比較鋼J)に比べて耐力がかなり高いという結果が得ら
れた。また、強゛ 度が高い割りには伸びおよび絞りで
示される靭延性の低下は少ないことが明らかであり、本
発明鋼は高温強度および靭性の優れたものである。
Table 2 As shown in Table 2, when compared in terms of 0.2% yield strength, the present invention steels A-G are compared to comparative steels H-J, especially 5UH36 (21- 4N,
The results showed that the yield strength was considerably higher than that of comparative steel J). Furthermore, it is clear that the decrease in toughness and ductility as shown by elongation and reduction of area is small despite its high strength, and the steel of the present invention has excellent high-temperature strength and toughness.

(2)高温疲れ強さ バルブ素材は前述の理由により作動中に繰返し引張り応
力を受けるため、高温疲れ強さは重要な特性の一つであ
る。
(2) High-temperature fatigue strength High-temperature fatigue strength is one of the important properties because the valve material is repeatedly subjected to tensile stress during operation for the reasons mentioned above.

そこで、排気バルブとしての作動温度付近である760
℃で回転曲げ疲労試験を行い、疲れ強さを調査した。こ
こでは10’サイクルでの疲れ強さを求めた結果を表3
に示す。
Therefore, 760, which is around the operating temperature of the exhaust valve,
A rotating bending fatigue test was conducted at ℃ to investigate fatigue strength. Here, Table 3 shows the results of determining fatigue strength after 10' cycles.
Shown below.

表3に示すように、本発明鋼A−Gの高温疲れ強さは高
Crである現用バルブ鋼(SUH36゜比較鋼J)のそ
れに比べ、同等以上である。
As shown in Table 3, the high-temperature fatigue strength of the present invention steels A-G is equal to or higher than that of the high-Cr current valve steel (SUH 36° comparative steel J).

表      3 (3)耐酸化性 排気バルブの使用温度は、前述したように700〜80
0℃付近であるため、耐酸化性も重要な特性の一つであ
る。
Table 3 (3) The operating temperature of the oxidation-resistant exhaust valve is 700-800℃ as mentioned above.
Since the temperature is around 0°C, oxidation resistance is also one of the important properties.

そこで電気炉を使用し、927°Cに加熱した静止置気
中で100時間保持した後脱スケールを行い、酸化減量
を求めることにより耐酸化性を調査した。
Therefore, using an electric furnace, the material was heated to 927.degree. C. and kept in static air for 100 hours, and then descaled, and the oxidation resistance was investigated by determining the oxidation loss.

その結果を表4に示す。The results are shown in Table 4.

表      4 表4に示すように、本発明鋼A〜Gでは、Crを10%
付近まで減らしたため、21%Crである比較鋼J (
SUH36)に比べて耐醇化性は若干劣っているものの
、大きな差はなく、十分刊気バルブ用素材として使用に
酎えうる耐酸化性を有している。なお、AMを添加した
鋼(B 、 C。
Table 4 As shown in Table 4, in the steels A to G of the present invention, Cr was 10%
Comparative steel J with 21% Cr (
Although its oxidation resistance is slightly inferior to that of SUH36), there is no major difference, and it has sufficient oxidation resistance to be used as a material for air valves. Note that AM-added steel (B, C)

F 、 G)はA文を雄加しない鋼(A 、 D 、 
E)に比べて#酸化性がより優れていることが明らかで
ある。
F, G) are steels (A, D,
It is clear that the #oxidizing property is better than that of E).

以上説明してきたように、この発明の耐熱鋼では、高M
n鋼において炭窒化物[:V (C、N) )を適量析
出させることによって強度の改善をはかると共に、Mo
、AsLの1種以上を添加することによってとくに高温
での短時間引張強度およびクリープ破断強度を著しく向
」二させたものであり、高価でかつ原料入手に不安のあ
るCrの含有量を少なくしたときでも、高温強度および
耐酸化性に優れると共に現用の排気バルブ用鋼に匹敵す
る高温疲労強度を有し、高負荷の排気バルブ、耐熱ボル
ト、耐熱部品の素材として好適であるという非常に優れ
た効果を有している。
As explained above, the heat-resistant steel of the present invention has a high M
In addition to improving the strength of N steel by precipitating an appropriate amount of carbonitride [:V (C, N)],
By adding one or more types of , AsL, the short-time tensile strength and creep rupture strength, especially at high temperatures, have been significantly improved, and the content of Cr, which is expensive and whose raw material availability is uncertain, has been reduced. It has excellent high-temperature strength and oxidation resistance, and has high-temperature fatigue strength comparable to current exhaust valve steel, making it suitable as a material for high-load exhaust valves, heat-resistant bolts, and heat-resistant parts. It has an effect.

代理人弁理士 小  塩   豊Representative Patent Attorney Yutaka Shio

Claims (4)

【特許請求の範囲】[Claims] (1)重量%で、 C+N:0.5〜1.0% Si:1.0%以下、Mn:8〜20%Cr:5〜20
%、Ni:0.5〜5%V:0.2〜2%を基本組成と
し、 M o : 0 、3〜3.5%、A文:0.5〜4%
のうちの1種または2種を含み、残部Feおよび不純物
からなることを特徴とする高温強度の優れた高M n 
H耐熱鋼
(1) In weight%, C+N: 0.5-1.0% Si: 1.0% or less, Mn: 8-20% Cr: 5-20
%, Ni: 0.5-5% V: 0.2-2% as the basic composition, Mo: 0, 3-3.5%, A text: 0.5-4%
A high Mn material with excellent high-temperature strength, characterized by containing one or two of the following, with the balance consisting of Fe and impurities.
H heat resistant steel
(2)重量%で、 C+N:0.5〜1.・0% Si: 1.0%以下、Mn:8〜20%Cr:5〜2
0%、Ni:0.5〜5%V:0.2〜2%を基本組成
とし、 M o : 0 、3〜3.5%、A見二0.5〜4%
のうちの1一種または2種を含み、 Ti:0.1〜2%、W:  0.1〜3%。 Nb+Ta:0.1〜3%のうち(7)1種または2種
以上を含有し、 残部Feおよび不純物からなることを特徴とする高温強
度の優れた高Mn耐熱鋼。
(2) In weight%, C+N: 0.5-1.・0% Si: 1.0% or less, Mn: 8-20% Cr: 5-2
The basic composition is 0%, Ni: 0.5-5%, V: 0.2-2%, Mo: 0, 3-3.5%, Ami 0.5-4%.
Contains one or two of the following: Ti: 0.1-2%, W: 0.1-3%. A high-Mn heat-resistant steel with excellent high-temperature strength, characterized by containing one or more types (7) of Nb+Ta: 0.1 to 3%, and the balance consisting of Fe and impurities.
(3)重量%で、 C+N:0.5〜i、o% Si:1.0%以下、Mn:8〜20%Cr:5〜20
%、Ni:0.5〜5%V:0.2〜2%を基本組成と
し、 Mo:0.3〜3.5%、 AJI : 0 、5〜4
%のうちの1種または2種を含み、 Zr:0.01〜0.2%。 B:0.OO1〜0.02%のうちの1種または2種を
含有し、 残部Feおよび不純物からなることを特徴とする高温強
度の優れた高Mn耐熱鋼。
(3) In weight%, C+N: 0.5-i, o% Si: 1.0% or less, Mn: 8-20% Cr: 5-20
%, Ni: 0.5-5% V: 0.2-2%, Mo: 0.3-3.5%, AJI: 0, 5-4
%, Zr: 0.01 to 0.2%. B:0. A high-Mn heat-resistant steel with excellent high-temperature strength, characterized in that it contains one or two of 1 to 0.02% of OO, and the balance consists of Fe and impurities.
(4)重量%で、 C+N : 0 、5〜1.0% Si : 1.0%以下、M n : 8〜20%、C
r:5〜20%、Ni:0.5〜5% V:0.2〜2%を基本組成とし、 Mo:0.3〜3.5%、AJI:0.5〜4%のうち
の1種または2種を含み、 Ti:0.1〜2%、W: 0.1〜3%。 N b+Ta : 0 、1〜3%のうちの1種または
2種以上、および Zr:0.01〜0.2%。 B:0.001〜0,02%のうちの1種または2種を
含有し、 1″残部Feおよび不純物からなる百とを特徴とする一
高温強度の優れた高M n jw熱鋼。
(4) In weight%, C+N: 0, 5-1.0% Si: 1.0% or less, Mn: 8-20%, C
The basic composition is r: 5-20%, Ni: 0.5-5%, V: 0.2-2%, Mo: 0.3-3.5%, AJI: 0.5-4%. Contains one or two types, Ti: 0.1-2%, W: 0.1-3%. Nb+Ta: 0, one or more of 1 to 3%, and Zr: 0.01 to 0.2%. B: A high Mnjw heat steel with excellent high temperature strength, containing one or two of 0.001 to 0.02%, with the remainder consisting of Fe and impurities.
JP8576383A 1983-05-18 1983-05-18 Heat-resistant steel Pending JPS59211557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8576383A JPS59211557A (en) 1983-05-18 1983-05-18 Heat-resistant steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8576383A JPS59211557A (en) 1983-05-18 1983-05-18 Heat-resistant steel

Publications (1)

Publication Number Publication Date
JPS59211557A true JPS59211557A (en) 1984-11-30

Family

ID=13867902

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPS59211557A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276957A (en) * 1985-06-01 1986-12-06 Kobe Steel Ltd Heat resisting steel
JPS6240347A (en) * 1985-08-13 1987-02-21 Kanto Tokushu Seiko Kk Austenitic hot tool steel
US5495837A (en) * 1993-06-11 1996-03-05 Mitsubishi Materials Corporation Engine valve having improved high-temperature wear resistance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117618A (en) * 1977-03-24 1978-10-14 Nippon Yakin Kogyo Co Ltd Highhstrength austenite stainless steel
JPS5677367A (en) * 1979-11-29 1981-06-25 Hitachi Metals Ltd Age hardening type austenitic hot working tool steel
JPS56139661A (en) * 1980-03-31 1981-10-31 Hitachi Metals Ltd Age hardening austenite steel for hot working tool
JPS57114644A (en) * 1981-01-08 1982-07-16 Kawasaki Steel Corp High manganese nonmagnetic steel with superior strength at high temperature

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117618A (en) * 1977-03-24 1978-10-14 Nippon Yakin Kogyo Co Ltd Highhstrength austenite stainless steel
JPS5677367A (en) * 1979-11-29 1981-06-25 Hitachi Metals Ltd Age hardening type austenitic hot working tool steel
JPS56139661A (en) * 1980-03-31 1981-10-31 Hitachi Metals Ltd Age hardening austenite steel for hot working tool
JPS57114644A (en) * 1981-01-08 1982-07-16 Kawasaki Steel Corp High manganese nonmagnetic steel with superior strength at high temperature

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276957A (en) * 1985-06-01 1986-12-06 Kobe Steel Ltd Heat resisting steel
JPS6240347A (en) * 1985-08-13 1987-02-21 Kanto Tokushu Seiko Kk Austenitic hot tool steel
US5495837A (en) * 1993-06-11 1996-03-05 Mitsubishi Materials Corporation Engine valve having improved high-temperature wear resistance

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