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    Martensitic stainless steel article and method for producing the same
    7.
    发明公开
    Martensitic stainless steel article and method for producing the same 失效
    Gegenstand aus martensitisches rostfreies Stahl und Verfahren zu ihrer Herstellung。

    公开(公告)号：EP0508574A1

    公开(公告)日：1992-10-14

    申请号：EP92301473.2

    申请日：1992-02-21

    申请人： CRUCIBLE MATERIALS CORPORATION

    发明人： Pinnow, Kenneth E. ,  Dorsch, Carl J.

    IPC分类号： C22C38/44

    CPC分类号： C22C38/44

    摘要： A martensitic stainless steel having an improved combination of strength, toughness, corrosion resistance and machinability, and particularly adapted for use in the manufacture of holder blocks, frames, backers and similar articles for anchoring molds and dies. The steel has a hardness within the range of 30 to 40 HRC and is consisting of, in weight percent, up to 0.09% carbon, up to 0.09% nitrogen, 0.02 to 0.09% carbon plus nitrogen, up to 4.50% manganes, up to 0.05% phosporus, 0.05 to 0.25% sulfur, up to 1.0% silicon, 1.00 to 4.00% nickel, 11.00 to 14.00% chromium, 0.25 to 1.00% molybdenum, up to 1.00% copper, balance iron and incidental impurities. Articles made from this steel may be austenitized at temperatures within the range of 1500 to 1750°F for about 1 hour per inch of thickness and either oil quenched or air cooled to achieve a martensitic structure. Thereafter, the article may be tempered or stress-relieved at a temperature between 500 and 850°F for about 1 hour per inch of thickness with a minimum of 2 hours. After these heat treatments, the article will exhibit a hardness between 30 and 40 HRC, preferably 35 to 40 HRC for higher strength applications, along with a drill machinability rating equal to or greater than 100.

    摘要翻译： 具有改进的强度，韧性，耐腐蚀性和可加工性的组合的马氏体不锈钢，特别适用于制造用于固定模具和模具的保持器块，框架，支撑件和类似物品。 钢的硬度在30至40HRC的范围内，以重量百分比计，最高达0.09％的碳，至多0.09％的氮，0.02至0.09％的碳和氮，至多4.50％的锰，至 0.05％磷，0.05至0.25％硫，至多1.0％硅，1.00至4.00％镍，11.00至14.00％铬，0.25至1.00％钼，至多1.00％铜，余量铁和附带杂质。 由该钢制成的制品可以在1500至1750°F的温度范围内奥氏体化，每英寸厚度约1小时，并且油淬火或空气冷却以获得马氏体结构。 此后，可以在500至850°F之间的温度下将制品回火或应力消除约1小时/英寸厚度，最少2小时。 在这些热处理之后，对于较高强度的应用，该制品将显示30至40HRC之间的硬度，优选为35至40HRC，以及等于或大于100的钻孔加工性等级。

    Welded corrosion-resistant ferritic stainless steel tubing and a cathodically protected heat exchanger containing the same
    9.
    发明公开
    Welded corrosion-resistant ferritic stainless steel tubing and a cathodically protected heat exchanger containing the same 失效
    焊接，耐腐蚀的，铁素体不锈钢的管且其作为阴极保护的热交换器使用。

    公开(公告)号：EP0368487A1

    公开(公告)日：1990-05-16

    申请号：EP89310622.9

    申请日：1989-10-17

    申请人： CRUCIBLE MATERIALS CORPORATION

    发明人： Redmerski, Lawrence S. ,  Pinnow, Kenneth E. ,  Eckenrod, John J.

    IPC分类号： C22C38/44

    CPC分类号： F28F19/004 ,  C22C38/44 ,  F28F21/083 ,  Y10S148/909 ,  Y10S165/905

    摘要： Welded ferritic stainless steel tubing having high resistance to hydrogen embrittlement particularly adapted for use in heat exchangers handling chemical media containing hydrogen sulfide or nascent hydrogen and in cathodically protected heat exchangers. The ferritic stainless steel of the welded tubing consists essentially of, in weight percent, carbon at least 0.002, nitrogen at least 0.002, carbon plus nitrogen 0.02 max. and preferably 0.01 to 0.02 chromium 23 to 28, preferably 25 to 28, manganese up to 1, preferably up to 0.5, nickel 1 to 4, silicon up to 1, preferably up to 0.5, phosphorus up to 0.04, sulfur up to 0.02, preferably up to 0.005, molybdenum 2 to 5, preferably 2 to 4, aluminum up to 0.1, columbium 0.60 max. with columbium being at least equal t eight times carbon plus nitrogen, and the balance iron and incidental impurities.

    摘要翻译： 具有氢脆高电阻焊接铁素体不锈钢管尤其适于用在换热器处理的化学介质含有硫化氢或初生氢和在阴极保护的热交换器。 焊接管的铁素体不锈钢besteht本质上的，以重量百分比计，碳至少0002，至少0002氮，碳加氮00:02最大值。 优选为0.01〜0.02的铬23至28，优选为25〜28的锰至多1个，优选至多0.5，镍为1〜4，硅至多1个，优选至多0.5，磷最多0.04硫最多0.02， 优选至多0005，钼2至5，优选2至4，铝高达0.1，铌0.60最大。 用钶至少等于吨八倍碳加氮，余量的铁和附带的杂质。

    Wear and corrosion resistant alloy articles
    10.
    发明公开
    Wear and corrosion resistant alloy articles 失效
    耐磨和耐腐蚀合金文章

    公开(公告)号：EP0271238A3

    公开(公告)日：1989-11-23

    申请号：EP87310199.2

    申请日：1987-11-19

    申请人： CRUCIBLE MATERIALS CORPORATION

    发明人： Hauser, John J. ,  Stasko, William ,  Pinnow, Kenneth E.

    IPC分类号： C22C37/06

    CPC分类号： C22C37/06 ,  C22C33/0285

    摘要： A powder-metallurgy alloy article having a good combination of wear resistance and corrosion resistance. The article is further characterized by an attainable minimum hardness after heat treatment of 60R c and a martensitic structure. The article is made from prealloyed particles of the composition, in percent by weight, carbon 2.5-5, manganese 0.2-1, phosphorus 0.10 maximum, sulfur 0.10 maximum, silicon 1 maximum, nickel 0.5 maximum, chromium 15-30, molybdenum 2-10, vanadium 6-­11, nitrogen 0.15 maximum and balance, iron. The article has a fine, uniform distribution of MC and other carbide phases.