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Instruction
Alloy Steel Tube Grade GB/T3077 38CrMoAl ISO 41CrAlMo74 Structural steel tubes standard
GB/T3077: 38CrMoAl
ISO: 41CrAlMo74
GOST: 38X2MOA(38XMOA)
DIN: 41CrAlMo7 34CrAlMo5
BS: 905M39 905M31
NF: 40CAD6.12 30CAD6.12
Chemical composition:
C :0.35~0.42
Si:0.20~0.45
Mn:0.30~0.60
S :≤0.035
P :≤0.035
Cr:1.35~1.65
Ni:≤0.030
Cu:≤0.030
Mo:0.15~0.25
Tensile strength: σb (MPa):≥980(100)
Yield strength:σs (MPa):≥835(85)
Elongation:δ5 (%):≥14
ψ (%):≥50
Impact: Akv (J):≥71
αkv (J/cm2):≥88(9) :
ISO: 41CrAlMo74
GOST: 38X2MOA(38XMOA)
DIN: 41CrAlMo7 34CrAlMo5
BS: 905M39 905M31
NF: 40CAD6.12 30CAD6.12
Chemical composition:
C :0.35~0.42
Si:0.20~0.45
Mn:0.30~0.60
S :≤0.035
P :≤0.035
Cr:1.35~1.65
Ni:≤0.030
Cu:≤0.030
Mo:0.15~0.25
Tensile strength: σb (MPa):≥980(100)
Yield strength:σs (MPa):≥835(85)
Elongation:δ5 (%):≥14
ψ (%):≥50
Impact: Akv (J):≥71
αkv (J/cm2):≥88(9) :
Hardness≤229HB:30mm
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