求助：美国4340的材质能不能淬火达到硬度HRC58-60

haiyang

求助各位斑竹，谁能告诉我4340的材质能不能淬火达到HRC58-60

& G: b6 u3 v/ g8 Z5 W

20MnCr5的材质是不是也可以淬火后的硬度达到HRC58-60

急！！！！！！！！！

先在这里谢谢里

sun jiabng

Material Number
~1.6565
: V2 A5 ?' I* D1 g4 b7 x8 q% x* C
Steel group
7 h! v6 b4 d5 n8 O& q' WStructural and constructional steels

8 [7 |5 E5 \% [- C% ^' s: C; kSymbol
3 u, }6 I' y1 @# o/ w7 r3 _40CrNiMoA; A50403

, r2 n# M3 E' ~7 t& A( @Standards
GB T 3078 (1994)
6 | ]9 r1 Q4 B1 V- ]Quality structural steel cold drawn bars


$ O0 o) I" E4 L4 nMaterial Number
3 l! q# e" \+ c6 y~1.6511; ~1.6565; ~1.6580; ~1.6582

& B( J: z# N: E, L, W: ]" }9 j HSteel 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)
, T! H$ K- n( @) C1 }# ]7 c
3 t! a {$ j' _' J$ t1 D+ o0 s% KStandards
0 F- h1 p; b! N) k/ }ASTM A 29-99
Steel bars, carbon and alloy, hot-wrought and cold-finished
- T6 I, a+ s! X: f9 Q7 z' L
+ h' e! ^. s! d+ zASTM A 320-02
! e7 V. i+ U4 Z! f9 X2 y- }+ mAlloy steel bolting materials for low-temperature service

& O) v, f: t- U/ l4 p; u* WASTM A 322-01
7 O& ^- h9 C7 W& MSteel bars, alloy, grades

ASTM A 331-00
Steel bars, alloy, cold-finished

+ ?: H$ _ v2 s6 r* U$ L% BASTM A 506-00
Steel, sheet and strip, alloy, hot-rolled and cold-rolled, regular quality and structural quality

ASTM A 519-96
% m& Z v7 K6 S: g' Z* g* zSeamless carbon and alloy steel mechanical tubing
$ L0 b1 u. G6 m! u( I0 x9 Q
! `* r5 P4 b2 E! H4 ?9 HASTM 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
( ^; x/ \! _% Y8 E4 _! x
# s6 P5 e2 P- S1 A. j; ?- ]ASTM A 752-98
; l, @6 ^" S0 u# I- Q) N( CWire rods and coarse round wire, alloy steel

% v( Y# K Z6 r7 o( hASTM A 829-00
Plates, alloy steel, structural quality

' t' e: q) t# t+ y. o' v# ]! i) vSAE J 404 (2000)
Alloy steels
2 J" V3 K5 ]3 p! e5 s; V

haiyang

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

claycao

达不到你要 HRC58-60哦。

lu69

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

devildoevil

怎么最后还是没有一个确切的答案呢？
/ j9 B" j5 ~+ }5 e4150应该可以达到 58-62吧？