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ASTM A511/A511M MT304 S31260 Seamless Stainless Tubing For Mechanical Applications
ASTM A511/A511M specification covers seamless stainless tubing for use in mechanical applications where corrosion-resistant or high-temperature strength is needed.
Scope:
1.1 This specification covers seamless stainless steel tube for use in mechanical applications where corrosion-resistant or high-temperature strength is needed. The grades covered are listed in Table 1 and Table 2.
1.2 This specification covers seamless cold-finished mechanical tubing and seamless hot-finished mechanical tubing in sizes up to 12¾ in. [325 mm] in outside nominal diameter (for round tubing) with wall thicknesses as required.
1.3 Tubes shall be furnished in one of the following shapes, as specified by the purchaser: round, square, rectangular, or special.
1.4 Optional supplementary requirements are provided and when desired, shall be stated in the order.
1.5 The values stated in inch-pound units are to be regarded as the standard. Within the text, the SI units are shown in square brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
Main Grades:S31260,S31803,S32101,S32205...
Chemical Composition:
| Grade | Chemical Composition % | ||||||||||
| C | Mn max | P max | S max | Si max | Ni | Cr | Mo | N | Cu | Others | |
| S31260 | 0.03 max | 1 | 0.03 | 0.03 | 0.75 | 5.5-7.5 | 24-26 | 2.5-3.5 | 0.1-0.3 | 0.2-0.8 | W 0.1-0.5 |
| S31803 | 0.03 max | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 21-23 | 2.5-3.5 | 0.08-0.2 | ... | ... |
| S32101 | 0.04 max | 4-6 | 0.04 | 0.03 | 1 | 1.35-1.7 | 21-22 | 0.1-0.8 | 0.2-0.25 | 0.1-0.8 | ... |
| S32205 | 0.03 max | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 22-23 | 3-3.5 | 0.14-0.2 | ... | ... |
Mark: As required.
Inspection and Test: chemical composition test, mechanical properties test(tensile, yield, elongation), process properties test(flatting, flaring, bending, hardness, impact, etc.), appearance and size test, non-destructive inspection test, hydrostastic test.
Delivery status: Annealed, normalized, normalized+Tempered, etc.
Surface treatment: oil impregnation, paint, passivation, phosphating, shot blasting etc.
Packing: Exporting package/wooden box /as requirement.
