求助：美国4340的材质能不能淬火达到硬度HRC58-60
<P>求助各位斑竹，谁能告诉我4340的材质能不能淬火达到HRC58-60</P><P>20MnCr5的材质是不是也可以淬火后的硬度达到HRC58-60</P>
<P>急！！！！！！！！！</P>
<P>先在这里谢谢里</P>
Re: 求助：美国4340的材质能不能淬火达到硬度HRC58-60
Material Number~1.6565
Steel group
Structural and constructional steels
Symbol
40CrNiMoA; A50403
Standards
GB T 3078 (1994)
Quality structural steel cold drawn bars
Material Number
~1.6511; ~1.6565; ~1.6580; ~1.6582
Steel group
Structural and constructional steels
Symbol
4340 (SAE); G43400 (UNS); A 29 (4340) (ASTM); A 320 (L43)(4340) (ASTM); A 322 (4340) (ASTM); A 331 (4340) (ASTM); A 506 (4340) (ASTM); A 519 (4340) (ASTM); A 574 (4340) (ASTM); A 646 (7)(4340) (ASTM); A 711 (4340) (ASTM); A 752 (4340) (ASTM); A 829 (4340) (ASTM); 6359F (AMS); 6409B (AMS); 6414H (AMS); 6415P (AMS); 6454C (AMS); 6484B (AMS); MIL-S-5000 (MIL)
Standards
ASTM A 29-99
Steel bars, carbon and alloy, hot-wrought and cold-finished
ASTM A 320-02
Alloy steel bolting materials for low-temperature service
ASTM A 322-01
Steel bars, alloy, grades
ASTM A 331-00
Steel bars, alloy, cold-finished
ASTM A 506-00
Steel, sheet and strip, alloy, hot-rolled and cold-rolled, regular quality and structural quality
ASTM A 519-96
Seamless carbon and alloy steel mechanical tubing
ASTM A 574-00
Alloy steel socket-head cap screws
ASTM A 646-99
Premium quality alloy steel blooms and billets for aircraft and aerospace forgings
ASTM A 711-01
Forging stock
ASTM A 752-98
Wire rods and coarse round wire, alloy steel
ASTM A 829-00
Plates, alloy steel, structural quality
SAE J 404 (2000)
Alloy steels
Re: 求助：美国4340的材质能不能淬火达到硬度HRC58-60
大虾，您还没明确告诉我呢 美国4340的材质能不能淬火达到硬度HRC58-60我看到20MnCr5最高能达到41-49HRC
Re: 求助：美国4340的材质能不能淬火达到硬度HRC58-60
达不到你要 HRC58-60哦。Re: 求助：美国4340的材质能不能淬火达到硬度HRC58-60
4340淬火后是可以达到HRC58-60，而20MnCr5需渗碳或碳氮共渗后淬火，也可达到HRC58-60 怎么最后还是没有一个确切的答案呢？4150应该可以达到 58-62吧？
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