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51CrV4(1.8159)●
300 ℃
●
C 0.470.55
Si≤0.40
Mn0.70
S ≤0.030
P ≤0.030
Cr0.901.20
Ni≤0.35
Cu≤0.25
V 0.100.25
●
σb (MPa)≥1274(130)
σs (MPa)≥1127(115)
δ5 ()≥10
ψ ()≥40
,≤321HB;+,≤321HB
●
850℃±20℃,; 500℃±50℃(,±30℃)
300 ℃
●
C 0.470.55
Si≤0.40
Mn0.70
S ≤0.030
P ≤0.030
Cr0.901.20
Ni≤0.35
Cu≤0.25
V 0.100.25
●
σb (MPa)≥1274(130)
σs (MPa)≥1127(115)
δ5 ()≥10
ψ ()≥40
,≤321HB;+,≤321HB
●
850℃±20℃,; 500℃±50℃(,±30℃)