求助：美國4340的材質能不能淬火達到硬度HRC58-60

haiyang

求助各位斑竹，誰能告訴我4340的材質能不能淬火達到HRC58-60

7 ?1 U0 R2 v! V- {+ F) B4 e; y, U

20MnCr5的材質是不是也可以淬火后的硬度達到HRC58-60

急�,。,。。,。,。。,。,。�

先在這里謝謝里

sun jiabng

Material Number
' D: D9 E+ o4 S) O! q- o~1.6565
2 E# b0 k) u+ ~: ^' u& p$ M
Steel group
/ a8 e5 C8 r  S6 H9 wStructural and constructional steels

Symbol
40CrNiMoA; A50403

Standards
( G2 h0 M( q7 c" A0 wGB T 3078 (1994)
Quality structural steel cold drawn bars
( m& B1 ~: Q/ |% N4 n* X7 C( ^0 K

Material Number
9 X- O8 E/ i. R0 ]2 n~1.6511; ~1.6565; ~1.6580; ~1.6582

+ W. l& k/ |& KSteel group
5 X2 j  V7 e( h8 E' mStructural and constructional steels
+ o' e  q4 ]3 @. F/ h7 w& A/ D2 }
Symbol
1 V9 R* j/ I& B" r# n3 t4340 (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)
3 F0 `1 `. Q4 {, I! M
" v2 ?* @1 J- z0 f* O$ u3 i7 X, QStandards
ASTM A 29-99
Steel bars, carbon and alloy, hot-wrought and cold-finished
. ?' ~) T. {9 R- e" y
! n# ^. B2 n' T9 v1 R0 qASTM A 320-02
Alloy steel bolting materials for low-temperature service
, W+ P! @0 f( u' _. q( w
ASTM A 322-01
# j7 q& Z( `; k4 c" VSteel bars, alloy, grades
! y: |6 ?9 \9 i* Z
ASTM A 331-00
Steel bars, alloy, cold-finished

ASTM A 506-00
9 E5 P; v+ ]$ G$ @Steel, sheet and strip, alloy, hot-rolled and cold-rolled, regular quality and structural quality
1 c4 @9 ^/ C3 T. Q& e
( `) ^. P8 D1 n; G8 S% Q" ]7 l; eASTM A 519-96
, {& |: s  @  u* C7 T; DSeamless carbon and alloy steel mechanical tubing

. N. [  k7 [+ _  Y. GASTM A 574-00
9 I1 R7 p# G% |) D5 E& o8 i( `/ nAlloy steel socket-head cap screws
# p& Q* q  ^9 }5 X
2 t. I& \2 L+ p5 D5 sASTM A 646-99
7 J8 \) C: h$ B% zPremium quality alloy steel blooms and billets for aircraft and aerospace forgings

; ?+ e" d3 W: p* B: \; o; `ASTM A 711-01
- p1 N! v5 p( _Forging stock
: d- U8 ?8 X8 R
ASTM A 752-98
" w3 z1 M7 b2 X: JWire rods and coarse round wire, alloy steel
% K$ I# h! @3 e, X$ H
% @8 }. G1 o# J0 ], E& Z: JASTM A 829-00
6 C& }7 G, s; v# D( P# ]! c/ G# nPlates, alloy steel, structural quality

SAE J 404 (2000)
Alloy steels

haiyang

大蝦，您還沒明確告訴我呢   美國4340的材質能不能淬火達到硬度HRC58-60
我看到20MnCr5最高能達到41-49HRC

claycao

達不到你要 HRC58-60哦,。

lu69

4340淬火后是可以達到HRC58-60,，而20MnCr5需滲碳或碳氮共滲后淬火，也可達到HRC58-60

devildoevil

怎么最后還是沒有一個確切的答案呢,？
4150應該可以達到 58-62吧,？