朝展牌 號
|
化學成分(質量分數(shù))(%)
|
||||||||
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
Nb
|
Cu
|
|
|
|||||||||
17-4ph
|
≤0.07
|
≤1.00
|
≤1.00
|
≤0.035
|
≤0.030
|
3.0-5.0
|
15.5-17.50
|
0.15-0.45
|
3.0-5.0
|
бb
MPa
|
бs
MPa
|
δ5
%
|
ψ
%
|
硬度
HRC
|
附注
|
|
1040℃水冷或空冷(A狀態(tài))
|
|
|
|
|
HB≤363
|
①
|
1040℃水或空冷,480℃回火 (H900)
|
≥1314
|
≥1177
|
≥10
|
≥40
|
≥40
|
|
1040℃水或空冷,495℃回火 (H925)
|
≥1177
|
≥1070
|
≥10
|
≥44
|
≥38
|
|
1040℃水或空冷,550℃回火 (H1025)
|
≥1070
|
≥1000
|
≥12
|
≥45
|
≥35
|
|
1040℃水或空冷,580℃回火 (H1075)
|
≥1000
|
≥863
|
≥13
|
≥45
|
≥31
|
|
1040℃水或空冷,620℃回火 (H1150)
|
≥932
|
≥725
|
≥16
|
≥50
|
≥28
|
|
1040℃水冷,(A狀態(tài))
|
1030
|
755
|
12
|
45
|
HB363
|
朝展實測數(shù)據(jù)
|
1040℃水冷,480℃ (H900)
|
1373
|
1275
|
14
|
50
|
44
|
|
1040℃水冷,495℃ (H925)
|
1304
|
1207
|
14
|
54
|
42
|
|
1040℃水冷,550℃ (H1025)
|
1167
|
1138
|
15
|
56
|
38
|
|
1040℃水冷,580℃ (H1075)
|
1138
|
1030
|
16
|
58
|
36
|
|
1040℃水冷,620℃ (H1150)
|
1000
|
862
|
19
|
60
|
33
|
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