|
Seamless Pipe For Cylinder Application
ASTM A519 —— Seamless Carbon and Alloy Steel Mechanical Tubing
37Mn, 34CrMo4
Physical Properties
|
Grade
|
T.S.（MPa）
|
Y.S.（MPa）
|
Elongation（％）
|
Impact Test Akv（J）
|
|
37Mn
|
≥750
|
≥630
|
≥16
|
≥55
|
|
34CrMo4
|
≥980
|
≥835
|
≥12
|
≥63
|
Chemical Analysis
|
Grade
|
Chemical Analsis（％）
|
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Cu
|
Mo
|
V
|
|
37Mn
|
0.34～0.40
|
0.10～0.30
|
1.35～1.65
|
≤0.025
|
≤0.020
|
—
|
≤0.30
|
≤0.20
|
—
|
—
|
|
34CrMo4
|
0.30～0.37
|
0.15～0.35
|
0.50～0.80
|
≤0.025
|
≤0.020
|
0.90～1.20
|
≤0.30
|
≤0.20
|
0.15～0.25
|
—
|
Heat Treatment
|
Grade
|
Kind
|
Normalizing ℃
|
Cooling
|
Tempering ℃
|
Cooling
|
|
|
37Mn
|
N& Q
|
840±10
|
Water Cooling
|
600±10
|
Air Cooling
|
|
|
34CrMo4
|
N & Q
|
850±10
|
Water Cooling
|
580±10
|
Air Cooling
|
|
|
