DIN 1.4432 Stainless Steel Round Pipe
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1.4432 stainless steel pipe is often referred to as grade 316L. This stainless steel is a low carbon austenitic stainless steel particularly suitable for welding applications where susceptibility to intergranular corrosion is a concern. The standard name for this material is usually ASTM A312 TP316L.
1.4432 alloy tube is composed of a high proportion of chromium, nickel and molybdenum elements and is often used to manufacture key equipment in the fields of chemical industry, shipbuilding, petroleum, pharmaceuticals and food processing. When using this alloy pipe, choosing the right processing technology is crucial to ensure its performance and corrosion resistance.
In general, 1.4432 stainless steel hollow tube is a high-alloy stainless steel with excellent corrosion resistance and good forging performance, and can be easily forged into various shapes. In application, choosing the appropriate processing technology according to specific needs is the key to ensuring its performance and corrosion resistance.
General Require of ASTMA213/M
| standard Items |
ASTM A213/A213M | |||
Steel grade |
TP301 TP304L TP316 TP316L TP317 TP310L TP347 TP310S |
|||
| Rp0.2(Mpa) | ≥170 ; ≥205 | |||
| Rm(Mpa) | ≥485 ; ≥515 | |||
| A(%) | ≥35 | |||
| Flatten experiment(mm) | H=1.09t/(0.09+t/D) | |||
| flaring test | Inside diameter 21-68% | |||
hydrostatic test (Mpa) |
D | Pmax | P=220.6t/D |
|
| <25.4 | 7 | |||
| 25.4-<38.1 | 10 | |||
| 38.1-<50.8 | 14 | |||
| 50.8-<76.2 | 17 | |||
| 76.2-<127 | 24 | |||
| ≥127 | 31 | |||
| Crystal corrosion test |
ASTM A262 | |||
| nondestructive inspection | ASTM E213 E309 E426 | |||
| Heat treatment (solid solution) | required | |||
Out-diameter tolerance(mm) |
OD | TOLERANCE | ||
| <25.4 | ±0.10 | |||
| 25.4-≤38.1 | ±0.15 | |||
| >38.1-<50.8 | ±0.20 | |||
| 50.8-<63.5 | ±0.25 | |||
| 63.5-<76.2 | ±0.30 | |||
| 76.2-≤101.6 | ±0.38 | |||
| >101.6-≤190.5 | ±0.38/-0.64 | |||
| >190.5-≤228.6 | ±0.38/-1.14 | |||
Thickness tolerance(mm) |
OD | TOLERANCE | ||
| ≤38.1 | +20%-0 | |||
| >38.1 | +22%-0 | |||
| straightness(mm/m) | REASONABLE | |||
| HARDNESS | HRB<90 | |||
DIN 1.4432 SS Round Pipe
1.4432 stainless steel technical parameters
Chemical composition: The chemical composition of 1.4432 stainless steel mainly includes chromium, nickel, molybdenum and other elements. The specific contents are as follows: C≤0.03, Si≤0.60, Mn≤1.50, P≤0.035, S≤0.015, Cr≥17.00-19.00, Ni≥ 13.50-15.50, Mo≥2.50-3.50, etc.
Mechanical properties: The mechanical properties of 1.4432 stainless steel mainly include tensile strength, yield strength, elongation and other indicators. Its tensile strength is generally between 680-880MPa, yield strength is between 410-480MPa, and elongation is between 25%-35%.
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