JISG3457 STPY400 steel specification the arc welded carbon steel pipes,hereinafter referred to as the pipes,used for piping for steam,water,gas,air,ect.of comparatively low working pressure.
JISG3457 STPY400 material chemical composition:
| Grade | C | P | S |
| STPY400 | ≤0.25 | ≤0.040 | ≤0.040 |
JISG3457 STPY400 steel pipe mechanical properties
| Grade | Tensile strength,N/mm2 | Yield strength N/mm2 | Elongation % Over 7mm up to 8mm |
| STPY400 | 400 [41] min | 255 [23] min | 18 |
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