Varnish Stainless Steel Welded Tube / ASTM A789 S32003 4 Inch Stainless Steel Pipe
Stainless Steel Tubing ASTM A789 S32003 Pipe
Standards:
ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
Features:
1. Superior resistance to corrosion, especially to stress corrosion, pitting corrosion, crevice corrosion, corrosion fatigue and abrasion & corrosion;
2. Good weldability;
3. Excellent intergranular corrosion resistance;
4. High cost-effectivenss, long life time;
Application:
Chemical processing, transport and storage,
Oil and Gas exploration and processing equipment,
Marine and other high chloride environments,
Pulp and paper digesters, liquor tanks and paper machines.
Chemical Requirements:
| UNS Designation | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu | Others |
| S31500 | 0.03 | 1.20-2.00 | 0.03 | 0.03 | 1.40-2.00 | 4.3-5.2 | 18.0-19.0 | 2.5-3.00 | 0.05-0.1 | … | … |
| S31803 | 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 21.0-23.0 | 2.5-3.5 | 0.08-0.20 | … | … |
| S32001 | 0.03 | 4.00-6.00 | 0.04 | 0.03 | 1 | 1.0-3.0 | 19.5-21.5 | 0.6 | 0.05-0.17 | 1 | … |
| S32003 | 0.03 | 2 | 0.03 | 0.02 | 1 | 3.0-4.0 | 19.5-22.5 | 1.50-2.00 | 0.14-0.20 | … | … |
| S32205 | 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 22.0-23.0 | 3.0-3.5 | 0.14-0.20 | … | … |
| S32304 | 0.03 | 2.5 | 0.04 | 0.04 | 1 | 3.0-5.5 | 21.5-24.5 | 0.05-0.60 | 0.05-0.20 | 0.05-0.60 | … |
| S32750 | 0.03 | 1.2 | 0.035 | 0.02 | 0.8 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 | 0.24-0.32 | 0.5 | … |
| S32760 | 0.05 | 1 | 0.03 | 0.01 | 1 | 6.0-8.0 | 24.0-26.0 | 3.0-4.0 | 0.20-0.30 | 0.50-1.00 | 0.50-1.00 |
Tensile and Hardness Requirements:
| Tensile and Hardness Requirements | |||||
| UNS Designation | Tensile Strength, min, ksi (Mpa) | Yield Strength, min, ksi (Mpa) | Elongation in 2 in. or 50mm, min, % | Hardness, max. | |
| HBW | HRC | ||||
| S31500 | 92 (630) | 64 (440) | 30 | 290 | 30 |
| S31803 | 90 (620) | 65 (450) | 25 | 290 | 30 |
| S32001 | 90 (620) | 65 (450) | 25 | 290 | 30 |
| S32003 Wall≤0.187‘’ (5.0mm) |
100 (690) | 70 (485) | 25 | 290 | 30 |
| S32003 Wall＞0.187‘’ (5.0mm) |
95 (655) | 65 (450) | 25 | 290 | 30 |
| S32205 | 95 (655) | 70 (485) | 25 | 290 | 30 |
| S32304 OD 1 in. (25mm) and Under |
100 (690) | 65 (450) | 25 | … | … |
| S32304 OD over 1 in. (25mm) |
87 (600) | 58 (400) | 25 | 290 | 30 |
| S32750 | 116 (800) | 80 (550) | 15 | 300 | 32 |
| S32760 | 109 (750) | 80 (550) | 25 | 310 | 32 |
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.
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