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1. 发明申请

US20120114964A1 COATED-SURFACE SLIDING PART HAVING EXCELLENT COATING ADHESION AND METHOD FOR PRODUCING THE SAME 审中-公开
标题翻译：具有优异涂层粘合性的涂层表面滑动部件及其制造方法
公开(公告)号：US20120114964A1
公开(公告)日：2012-05-10
申请号：US13384092
申请日：2010-07-13
申请人： Fumiaki Honda , Kenji Yokoyama , Kenichi Inoue , Kunichika Kubota , Toshihiro Uehara , Takehiro Ohno , Katsuhiko Ohishi
发明人： Fumiaki Honda , Kenji Yokoyama , Kenichi Inoue , Kunichika Kubota , Toshihiro Uehara , Takehiro Ohno , Katsuhiko Ohishi
IPC分类号： C22C38/22 , B32B15/18 , C23C16/26 , C22C38/60
CPC分类号： C23C14/022 , B32B15/013 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/22 , C23C14/025 , C23C14/0605 , C23C14/165 , Y10T428/12458 , Y10T428/12535
摘要： Provided is a coated-surface sliding part having excellent adhesion of a hard coating, and a method for producing the same part. The coated-surface sliding part is a sliding part wherein a hard coating is formed by physical deposition on the surface of a base material formed from, by mass percent, C 0.5 to 0.8%, Si 0.1 to 1.5%, Mn 0.2 to 1.0%, Cr 8.0 to 13.5%, Mo and/or W 0.5 to 4.0% in terms of (Mo+ 1/2 W), and N 0.01 to 0.1%, with the remainder being Fe and impurities. The physically deposited coating is a titanium metal coating further covered by a diamond-like carbon coating. The method for producing a coated-surface part involves sputtering in order to apply the physically deposited coating, which consists of the titanium metal coating and then the diamond-like carbon coating which forms the surface layer, to the surface of the base material having the aforementioned composition. The base material is preferably subjected to argon gas bombardment prior to application of the physically deposited coating.
摘要翻译：提供了具有优异的硬涂层粘附性的涂布表面滑动部件及其制造方法。涂覆表面滑动部分是滑动部分，其中通过物理沉积形成基体材料表面上的硬质涂层，质量百分比为C 0.5至0.8％，Si 0.1至1.5％，Mn为0.2至1.0％，Cr 8.0〜13.5％，Mo和/或W为0.5〜4.0％（Mo + 1 / 2W），N为0.01〜0.1％，余量为Fe和杂质。物理沉积的涂层是进一步被金刚石状碳涂层覆盖的钛金属涂层。涂覆表面部分的制造方法包括溅射，以将由钛金属涂层和形成表面层的类金刚石碳涂层组成的物理沉积涂层施加到具有表面层的基材的表面上上述组成。在施加物理沉积的涂层之前，优选对基材进行氩气轰击。

2. 发明授权

US08480821B2 Piston ring material for internal combustion engine 有权
标题翻译：内燃机活塞环材料
公开(公告)号：US08480821B2
公开(公告)日：2013-07-09
申请号：US12934575
申请日：2009-03-17
申请人： Katsuhiko Ohishi , Toshihiro Uehara , Kunichika Kubota
发明人： Katsuhiko Ohishi , Toshihiro Uehara , Kunichika Kubota
IPC分类号： C22C38/00 , F16J9/00
CPC分类号： C22C38/02 , C21D9/40 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/50 , C22C38/58 , C22C38/60
摘要： A piston ring material is provided which retains excellent mechanical properties and processability, which are required of piston ring materials, and has wearing resistance and scuffing resistance, which are sliding properties required of piston rings. The piston ring material, which is for use in internal combustion engines, contains, in terms of mass %, 0.3-0.8% carbon, 0.1-3.0% silicon, 0.1-3.0% manganese, 0.01-0.3% sulfur, 0.1-2.0% chromium, and 0.05-2.0% the sum of titanium and/or zirconium, with the remainder being iron and incidental impurities. The titanium and/or zirconium contained in the piston ring material and the sulfur contained therein satisfy the following relationship. [Ti (%)+½Zr (%)]/S (%)≦5.0 Preferably, the material may contain one or more members selected from up to 1.0% copper, less than 3.0% molybdenum, up to 1.0% aluminum, and less than 2.0% nickel, in terms of mass %.
摘要翻译：提供了活塞环材料，其保持了活塞环材料所需的优异的机械性能和加工性能，并且具有耐磨性和抗划伤性，这是活塞环所需的滑动性能。用于内燃机的活塞环材料以质量％计含有0.3-0.8％的碳，0.1-3.0％的硅，0.1-3.0％的锰，0.01-0.3％的硫，0.1-2.0％的硫，铬和0.05-2.0％的钛和/或锆的总和，其余为铁和附带的杂质。包含在活塞环材料中的钛和/或其中所含的硫满足以下关系。 [Ti（％）+½Zr（％）] / S（％）@ 5.0优选地，该材料可以包含一种或多种选自最高达1.0％的铜，小于3.0％的钼，至多1.0％的铝和更少的成分超过2.0％的镍，以质量％计。

3. 发明申请

US20100291407A1 ALLOY TO BE SURFACE-COATED AND SLIDING MEMBERS 失效
标题翻译：合金是表面涂层和滑动成员
公开(公告)号：US20100291407A1
公开(公告)日：2010-11-18
申请号：US12863127
申请日：2009-01-16
申请人： Kenji Yokoyama , Kunichika Kubota , Toshihiro Uehara , Takehiro Ohno , Katsuhiko Ohishi
发明人： Kenji Yokoyama , Kunichika Kubota , Toshihiro Uehara , Takehiro Ohno , Katsuhiko Ohishi
IPC分类号： B32B15/18 , C22C38/22 , C22C38/20 , B32B15/01
CPC分类号： C23C14/0605 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/22 , Y10T428/12972 , Y10T428/12979 , Y10T428/30
摘要： An alloy to be surface-coated, which can keep excellent hardness of 58HRC or above even when the amount of an alloying element added is reduced or even when the alloy is heated to a temperature of as high as 400 to 500° C.; and sliding members produced by forming a hard film on the surface of the alloy. An alloy to be surface-coated, the surface of which is to be covered with a hard film, which alloy contains by mass C: 0.5 to 1.2%, Si: 2.0% or below, Mn: 1.0% or below, Cr: 5.0 to 14.0%, Mo+1/2 W: 0.5 to 5.0%, and N: more than 0.015 to 0.1% with the balance being Fe and impurities, preferably such an alloy which contains by mass C: 0.6 to 0.85%, Si: 0.1 to 1.5%, Mn: 0.2 to 0.8%, Cr: 7.0 to 11.0%, Mo+1/2 W: 1.0 to 4.0%, and N: 0.04 to 0.08%.
摘要翻译：即使在合金元素添加量减少甚至合金加热至400〜500℃的温度时，即使表面被覆的合金也能够保持58HRC以上的优异的硬度。以及通过在合金表面上形成硬质膜而制造的滑动构件。要表面涂覆的合金，其表面将被硬膜覆盖，该合金以C：0.5至1.2％，Si：2.0％或更低，Mn：1.0％或更低，Cr：5.0 至14.0％，Mo + 1 / 2W：0.5〜5.0％，N：大于0.015〜0.1％，余量为Fe和杂质，优选含有C：0.6〜0.85％的Si， 0.1〜1.5％，Mn：0.2〜0.8％，Cr：7.0〜11.0％，Mo + 1 / 2W：1.0〜4.0％，N：0.04〜0.08％。

4. 发明申请

US20100158745A1 PISTON RING MATERIAL FOR INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：内燃机活塞环材料
公开(公告)号：US20100158745A1
公开(公告)日：2010-06-24
申请号：US12161092
申请日：2007-04-19
申请人： Katsuhiko Ohishi , Toshihiro Uehara , Kunichika Kubota
发明人： Katsuhiko Ohishi , Toshihiro Uehara , Kunichika Kubota
IPC分类号： C22C38/22
CPC分类号： F16J9/26 , C21D1/76 , C21D6/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/22
摘要： A piston ring material that when formed into a piston ring product, maintains excellent properties, and that at the production of piston ring rod, realizes excellent processability and shape stability. There is provided a piston ring material for internal combustion engine comprising, by mass, 0.5 to less than 0.7% C, 1.0% or less Si, 1.0% or less Mn, 12.0 to 16.0% Cr, 3.0% or less Mo and/or W (Mo+1/2W), 0.02 to 0.14% N and the balance Fe and unavoidable impurities, wherein the relationship of contained C, N and Cr satisfies the formulae: 25≦43.22C (%)+42.45N (%)−0.02Cr (%)
摘要翻译：一种活塞环材料，当形成活塞环产品时，保持优异的性能，并且在生产活塞环棒时，实现了优异的加工性能和形状稳定性。本发明提供一种内燃机的活塞环材料，其含有0.5〜0.7％以下的Si，1.0％以下的Si，1.0％以下的Mn，12.0〜16.0％的Cr，3.0％以下的Mo和/或 W（Mo + 1 / 2W），0.02〜0.14％N，余量为Fe和不可避免的杂质，其中C，N和Cr含量满足下式：25＆nlE; 43.22C（％）+ 42.45N（％ 0.02Cr（％）<40，0.15 <0.92℃（％）+ 0.67N（％）〜0.03Cr（％）<0.30。

5. 发明申请

US20110018207A1 PISTON RING MATERIAL FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：内燃机活塞环材料
公开(公告)号：US20110018207A1
公开(公告)日：2011-01-27
申请号：US12934575
申请日：2009-03-17
申请人： Katsuhiko Ohishi , Toshihiro Uehara , Kunichika Kubota
发明人： Katsuhiko Ohishi , Toshihiro Uehara , Kunichika Kubota
IPC分类号： F16J9/00
CPC分类号： C22C38/02 , C21D9/40 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/50 , C22C38/58 , C22C38/60
摘要： A piston ring material is provided which retains excellent mechanical properties and processability, which are required of piston ring materials, and has wearing resistance and scuffing resistance, which are sliding properties required of piston rings. The piston ring material, which is for use in internal combustion engines, contains, in terms of mass %, 0.3-0.8% carbon, 0.1-3.0% silicon, 0.1-3.0% manganese, 0.01-0.3% sulfur, 0.1-2.0% chromium, and 0.05-2.0% the sum of titanium and/or zirconium, with the remainder being iron and incidental impurities. The titanium and/or zirconium contained in the piston ring material and the sulfur contained therein satisfy the following relationship. [Ti (%)+½Zr (%)]/S (%)≦5.0 Preferably, the material may contain one or more members selected from up to 1.0% copper, less than 3.0% molybdenum, up to 1.0% aluminum, and less than 2.0% nickel, in terms of mass %.
摘要翻译：提供了活塞环材料，其保持了活塞环材料所需的优异的机械性能和加工性能，并且具有耐磨性和抗划伤性，这是活塞环所需的滑动性能。用于内燃机的活塞环材料以质量％计含有0.3-0.8％的碳，0.1-3.0％的硅，0.1-3.0％的锰，0.01-0.3％的硫，0.1-2.0％的硫，铬和0.05-2.0％的钛和/或锆的总和，其余为铁和附带的杂质。包含在活塞环材料中的钛和/或其中所含的硫满足以下关系。 [Ti（％）+½Zr（％）] / S（％）＆nlE; 5.0优选地，该材料可以包含一种或多种选自最高达1.0％的铜，小于3.0％的钼，至多1.0％的铝，以及小于2.0％的镍，以质量％计。

6. 发明授权

US08409712B2 Alloy to be surface-coated and sliding members 失效
标题翻译：合金为表面涂层和滑动构件
公开(公告)号：US08409712B2
公开(公告)日：2013-04-02
申请号：US12863127
申请日：2009-01-16
申请人： Kenji Yokoyama , Kunichika Kubota , Toshihiro Uehara , Takehiro Ohno , Katsuhiko Ohishi
发明人： Kenji Yokoyama , Kunichika Kubota , Toshihiro Uehara , Takehiro Ohno , Katsuhiko Ohishi
IPC分类号： B32B9/00
CPC分类号： C23C14/0605 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/22 , Y10T428/12972 , Y10T428/12979 , Y10T428/30
摘要： An alloy to be surface-coated, which can keep excellent hardness of 58HRC or above even when the amount of an alloying element added is reduced or even when the alloy is heated to a temperature of as high as 400 to 500° C.; and sliding members produced by forming a hard film on the surface of the alloy. An alloy to be surface-coated, the surface of which is to be covered with a hard film, which alloy contains by mass C: 0.5 to 1.2%, Si: 2.0% or below, Mn: 1.0% or below, Cr: 5.0 to 14.0%, Mo+1/2 W: 0.5 to 5.0%, and N: more than 0.015 to 0.1% with the balance being Fe and impurities, preferably such an alloy which contains by mass C: 0.6 to 0.85%, Si: 0.1 to 1.5%, Mn: 0.2 to 0.8%, Cr: 7.0 to 11.0%, Mo+1/2 W: 1.0 to 4.0%, and N: 0.04 to 0.08%.
摘要翻译：即使在合金元素添加量减少甚至合金加热至400〜500℃的温度时，即使表面被覆的合金也能够保持58HRC以上的优异的硬度。以及通过在合金表面上形成硬质膜而制造的滑动构件。要表面涂覆的合金，其表面将被硬膜覆盖，该合金以C：0.5至1.2％，Si：2.0％或更低，Mn：1.0％或更低，Cr：5.0 至14.0％，Mo + 1 / 2W：0.5〜5.0％，N：大于0.015〜0.1％，余量为Fe和杂质，优选含有C：0.6〜0.85％的Si， 0.1〜1.5％，Mn：0.2〜0.8％，Cr：7.0〜11.0％，Mo + 1 / 2W：1.0〜4.0％，N：0.04〜0.08％。

7. 发明授权

US08741215B2 Heat-resisting steel for engine valves excellent in high temperature strength 有权
标题翻译：发动机气门用耐热钢，耐高温性能优良
公开(公告)号：US08741215B2
公开(公告)日：2014-06-03
申请号：US13265086
申请日：2010-04-19
申请人： Katsuhiko Ohishi , Takehiro Ohno , Toshihiro Uehara
发明人： Katsuhiko Ohishi , Takehiro Ohno , Toshihiro Uehara
IPC分类号： C22C38/42 , C22C38/44 , C22C38/48
CPC分类号： C22C38/44 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/48 , C22C38/54 , F01L3/02 , F01L2101/00 , F01L2800/18 , F01L2820/01 , F01L2820/02
摘要： To provide an inexpensive heat-resisting steel for engine valves by causing Fe-based heat-resisting steel to exhibit high temperature strength not inferior to that of Ni-based heat-resisting steel. A heat-resisting steel for engine valves excellent in high temperature strength containing, in % by mass, C: 0.20 to 0.50%, Si: 1.0% or less, Mn: 5.0% or less, P: 0.1 to 0.5%, Ni: 8.0 to 15.0%, Cr: 16.0 to 25.0%, Mo: 2.0 to 5.0%, Cu: 0.5% or less, Nb: 1.0% or less (including 0%), W: 8.0% or less (including 0%), N: 0.02 to 0.2%, B: 0.01% or less, and remnants of Fe and impurities,wherein the heat-resisting steel for engine valves satisfies formulae below: 442P(%)+12Mo(%)+5W(%)+7Nb(%)+328N(%)+171≧300 Formula (1) −38.13P(%)+1.06Mo(%)+0.13W(%)+9.64Nb(%)+13.52N(%)+4.83≧0.12 Formula (2).
摘要翻译：通过使Fe系耐热钢呈现出不劣于Ni系耐热钢的高温强度，为发动机阀提供便宜的耐热钢。 1.一种耐高温发动机用耐热钢，以质量％计含有C：0.20〜0.50％，Si：1.0％以下，Mn：5.0％以下，P：0.1〜0.5％，Ni： 8.0〜15.0％，Cr：16.0〜25.0％，Mo：2.0〜5.0％，Cu：0.5％以下，Nb：1.0％以下（含0％），W：8.0％以下（含0％ N：0.02〜0.2％，B：0.01％以下，Fe和杂质的残留物，其中，发动机气门用耐热钢满足下式：442P（％）+ 12Mo（％）+ 5W（％）+ 7Nb （％）+ 328N（％）+ 171≧300式（1）-38.13P（％）+ 1.06Mo（％）+ 0.13W（％）+ 9.64Nb（％）+ 13.52N（％）+ 4.83≧0.12 式（2）。

8. 发明申请

US20120107169A1 HEAT-RESISTING STEEL FOR ENGINE VALVES EXCELLENT IN HIGH TEMPERATURE STRENGTH 有权
标题翻译：发动机用耐热钢在高温强度下表现优异
公开(公告)号：US20120107169A1
公开(公告)日：2012-05-03
申请号：US13265086
申请日：2010-04-19
申请人： Katsuhiko Ohishi , Takehiro Ohno , Toshihiro Uehara
发明人： Katsuhiko Ohishi , Takehiro Ohno , Toshihiro Uehara
IPC分类号： C22C38/44 , C22C38/48 , C22C38/54 , C22C38/42
CPC分类号： C22C38/44 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/48 , C22C38/54 , F01L3/02 , F01L2101/00 , F01L2800/18 , F01L2820/01 , F01L2820/02
摘要： To provide an inexpensive heat-resisting steel for engine valves by causing Fe-based heat-resisting steel to exhibit high temperature strength not inferior to that of Ni-based heat-resisting steel. A heat-resisting steel for engine valves excellent in high temperature strength containing, in % by mass, C: 0.20 to 0.50%, Si: 1.0% or less, Mn: 5.0% or less, P: 0.1 to 0.5%, Ni: 8.0 to 15.0%, Cr: 16.0 to 25.0%, Mo: 2.0 to 5.0%, Cu: 0.5% or less, Nb: 1.0% or less (including 0%), W: 8.0% or less (including 0%), N: 0.02 to 0.2%, B: 0.01% or less, and remnants of Fe and impurities,wherein the heat-resisting steel for engine valves satisfies formulae below: 442P(%)+12Mo(%)+5W(%)+7Nb(%)+328N(%)+171≧300 Formula (1) −38.13P(%)+1.06Mo(%)+0.13W(%)+9.64Nb(%)+13.52N(%)+4.83≧0.12 Formula (2)
摘要翻译：通过使Fe系耐热钢呈现出不劣于Ni系耐热钢的高温强度，为发动机阀提供便宜的耐热钢。 1.一种耐高温发动机用耐热钢，以质量％计含有C：0.20〜0.50％，Si：1.0％以下，Mn：5.0％以下，P：0.1〜0.5％，Ni： 8.0〜15.0％，Cr：16.0〜25.0％，Mo：2.0〜5.0％，Cu：0.5％以下，Nb：1.0％以下（含0％），W：8.0％以下（含0％ N：0.02〜0.2％，B：0.01％以下，Fe和杂质的残留物，其中，发动机气门用耐热钢满足下式：442P（％）+ 12Mo（％）+ 5W（％）+ 7Nb （％）+ 328N（％）+ 171≧300式（1）-38.13P（％）+ 1.06Mo（％）+ 0.13W（％）+ 9.64Nb（％）+ 13.52N（％）+ 4.83≧0.12 公式（2）

9. 发明申请

US20100189590A1 MARAGING STEEL AND MARAGING STEEL FOR METALLIC BELT 审中-公开
标题翻译：用于金属带的马氏体和马氏体钢
公开(公告)号：US20100189590A1
公开(公告)日：2010-07-29
申请号：US12668583
申请日：2007-07-11
申请人： Katsuhiko Ohishi , Toshihiro Uehara
发明人： Katsuhiko Ohishi , Toshihiro Uehara
IPC分类号： C22C38/52 , C22C38/44 , C22C38/54
CPC分类号： C22C38/44 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/06 , C22C38/50 , C22C38/52 , C22C38/54
摘要： A maraging steel for metallic belts which has a composition capable of being reduced in the content of TiN serving as a starting point for fatigue fracture in a high-cycle-rate region. The composition facilitates nitriding to heighten the surface hardness. The steel has a nitrided surface layer having increased compressive residual stress and hence improved flexural fatigue strength. In the steel, former austenite crystal grains have been reduced in size in order to secure higher strength and higher ductility. The maraging steel consists of, by mass %, up to 0.01% C, up to 0.1% Si, up to 0.1% Mn, up to 0.01% P, up to 0.005% S, 17.0-22.0% Ni, 0.1-4.0% Cr, 3.0-7.0% Mo, from more than 7.0 to 20.0% Co, up to 0.1% Ti, up to 2.5% Al, up to 0.03% N, up to 0.005% 0, up to 0.01% B (exclusive zero), and the balance of Fe and unavoidable impurities, wherein Co/3+Mo+4Al is 8.0-15.0%.
摘要翻译：一种用于金属带的马氏体时效钢，具有能够在高循环率区域中作为疲劳断裂起点的TiN含量降低的组成。该组合物有助于氮化以提高表面硬度。钢具有具有增加的压缩残余应力并因此改善的弯曲疲劳强度的氮化表面层。在钢中，为了确保更高的强度和更高的延展性，原奥氏体晶粒尺寸已经减小。马氏体时效钢以质量％计，高达0.01％的C，高达0.1％的Si，至多0.1％的Mn，至多0.01％的P，至多0.005％的S，17.0-22.0％的Ni，0.1-4.0％ Cr，3.0-7.0％Mo，7.0〜20.0％Co，0.1％Ti以下，Al：2.5％以下，N：0.03％以下，B：0以下，不超过0.01％，余量为Fe和不可避免的杂质，其中Co / 3 + Mo + 4Al为8.0〜15.0％。

10. 发明申请

US20140230968A1 MARAGING STEEL 审中-公开
标题翻译： MARAGING钢铁
公开(公告)号：US20140230968A1
公开(公告)日：2014-08-21
申请号：US14348308
申请日：2012-08-30
申请人： Katsuhiko Ohishi , Toshihiro Uehara , Ichiro Kishigami
发明人： Katsuhiko Ohishi , Toshihiro Uehara , Ichiro Kishigami
IPC分类号： C23C8/26 , C22C38/52 , C22C38/50 , C22C38/00 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/54 , C22C38/44
CPC分类号： C23C8/26 , C21D6/001 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/50 , C22C38/52 , C22C38/54 , F16G5/16
摘要： Provided is maraging steel with which maraging steel that has been subjected to nitriding treatment has excellent fatigue strength and stable high strength. Maraging steel that has been subjected to nitriding treatment to a thickness of 0.5 mm or less and comprises, by mass %, 0.008% or less of C, 0.5% or less of Si, 0.5% or less of Mn, 0.5 to 1.5% of Cr, 16.0 to 22.0% of Ni, 3.0 to 7.0% of Co, and 3.0 to 7.0% of Mo is maraging steel further comprising, by mass %, 0.6 to 1.3% of Al and Fe and impurities as the balance, wherein the impurities are maintained at 0.01% or less of Ti, 0.01% or less of Nb, 0.01% or less of Ta, and 0.01% or less of W, the ratio of Al and Ti is Al/Ti>250, and by Vickers hardness, the surface hardness of the maraging steel is 800 to 1,050 HV and internal hardness of the maraging steel is 570 HV or less.
摘要翻译：提供了经过渗氮处理的马氏体时效钢具有优异的疲劳强度和稳定的高强度的马氏体时效钢。已经进行了氮化处理的钢板，其厚度为0.5mm以下，以质量％计含有C：0.008％以下，Si：0.5％以下，Mn：0.5％以下，0.5〜1.5％ Cr，16.0〜22.0％的Ni，3.0〜7.0％的Co和3.0〜7.0％的Mo是马氏体时效钢，还含有以质量％计为0.6〜1.3％的Al和Fe，杂质为余量，其中杂质保持在Ti的0.01％以下，Nb：0.01％以下，Ta：0.01％以下，W：0.01％以下，Al和Ti的比例为Al / Ti> 250，维氏硬度，马氏体时效钢的表面硬度为800〜1050HZ，马氏体时效钢的内部硬度为570HV以下。

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