GB/T 18248 34CrMo4 gas cylinder steel pipe specifies the dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marks and quality certificates of seamless steel pipes for gas cylinders and accumulator shells. GB/T 18248 34CrMo4 gas cylinder steel pipe is applicable to the manufacture of seamless steel tubes for gas cylinders and accumulators.
GB/T 18248 34CrMo4 gas cylinder steel pipe chemical composition
| Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
|
GB/T 18248 34CrMo4 |
0.3-0.37 |
0.4 |
0.6-0.9 |
0.025 |
0.035 |
0.9-1.2 |
0.15-0.3 |
GB/T 18248 34CrMo4 gas cylinder steel pipe tensile strength
| Nominal diameter (mm): |
To 16 |
16-40 |
40-100 |
100-160 |
160-250 |
|
Tensile strength |
1000-1200 |
900-1100 |
800-950 |
750-900 |
700-850 |
|
Nominal thickness mm |
0.3-3 |
|
Tensile strength |
600 |
|
Nominal thickness mm |
To 8 |
8-20 |
20-50 |
50-80 |
- |
|
Tensile strength |
1000 |
900 |
800 |
750 |
- |
GB/T 18248 34CrMo4 gas cylinder steel pipe yield strength
| Nominal diameter(mm) |
To 16 |
16-40 |
40-100 |
100-160 |
160-330 |
|
Yield strength |
800 |
650 |
550 |
450-500 |
410-450 |
GB/T 18248 34CrMo4 gas cylinder steel pipe equivalent grades
| USA |
DIN |
JIS |
AFNOR |
BS |
UNI |
GB |
SS |
ISO |
|
4135 |
34CrMo4 |
SCM435H |
34CD4 |
708A30 |
34CrMo4 |
35CrMo |
25CrMo4 |
34CrMo4 |
BBN provides GB/T 18248 34CrMo4 gas cylinder steel pipe of various sizes, and we have a large stock. GB/T 18248 34CrMo4 gas cylinder steel pipe is a kind of high quality quenched and tempered alloy structural steel, which belongs to high quality low carbon, low alloy chromium, molybdenum and nickel surface hardening steel. The hardness of oil quenching and tempering is 18-22HRC, and the hardness of annealing process is less than 250HB. 34CrMo4 steel pipe has low carbon content range and good welding performance.
