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

20MnCr5的材质是不是也可以淬火后的硬度达到HRC58-60

% T. C( k' X6 y. f

急！！！！！！！！！

先在这里谢谢里

sun jiabng

Material Number
9 d) G2 d. |* l~1.6565
& T  X! V  A' u
; j  r# {/ f7 @2 O5 VSteel group
+ Q0 j. u" X& `$ gStructural and constructional steels
# K: F* o' h: N0 Y5 X* N3 O3 Y' B
" R$ ~# h5 }3 d) d4 f% fSymbol
$ _# N$ \. a7 T, P3 g40CrNiMoA; A50403
: S7 P7 Y( L4 A# K
& K: |9 ?6 m* S* l9 nStandards
GB T 3078 (1994)
Quality structural steel cold drawn bars

* ]1 x& N; ]' ?
8 l$ h2 L7 @) JMaterial Number
~1.6511; ~1.6565; ~1.6580; ~1.6582

Steel group
* W: J" d' V; Q/ yStructural and constructional steels
( ^2 Q4 K7 v5 E1 D  p
5 x4 D; G/ @4 PSymbol
- q7 ], G1 O8 n" W, [3 g- F4340 (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
/ e8 t2 o* S+ h7 |ASTM A 29-99
6 S6 d: P1 W2 D1 F3 d7 I" JSteel bars, carbon and alloy, hot-wrought and cold-finished
( {' n! P' G3 y% Q) w' J1 f) E
& W5 \/ e1 M) L9 E: A' }5 ZASTM A 320-02
Alloy steel bolting materials for low-temperature service
4 o4 c$ e' y1 b
$ A# B; |8 _) z' Z- vASTM A 322-01
3 g1 d( _5 r) z. p6 A0 H, ]Steel bars, alloy, grades
8 F  U, N' E3 X" H+ t6 I' ^
ASTM A 331-00
* K8 q8 A5 f0 [8 TSteel 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
8 ~  \1 O0 D4 W0 ]+ ~- YSeamless carbon and alloy steel mechanical tubing

! \5 D8 H3 i6 E! KASTM A 574-00
( G. w( q/ p( Z& p6 n9 oAlloy steel socket-head cap screws
+ |% ?, s- ?! u0 ^) T8 [7 o
) G- ^7 A" I7 D  ~. {7 d) SASTM A 646-99
Premium quality alloy steel blooms and billets for aircraft and aerospace forgings

ASTM A 711-01
0 q" Q0 p6 X) d; J, o1 `" kForging stock
  L' K0 b8 A+ w* `4 j; v! D. l
ASTM A 752-98
' V% U3 ?  o. fWire rods and coarse round wire, alloy steel
9 w# K- F3 z! t/ e
7 W2 {: f7 Z: O. ZASTM A 829-00
) P5 _* N4 z: ?  o: Q8 e/ WPlates, alloy steel, structural quality
4 Q; m2 {2 r4 n
$ r( E( \2 r* h% U% `SAE J 404 (2000)
- F* O- ?' q" c, p: I# zAlloy steels

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？
4150应该可以达到 58-62吧？