630 631 17-4PH 904L 316Ti Stainless Steel Tube & Seamless Pipe
High-performance stainless steel tubes and seamless pipes including SUS630 and SUS631 grades, designed for demanding industrial applications requiring superior strength and corrosion resistance.
17-4PH Precipitation Hardening Stainless Steel Tube
17-4 PH (AISI 630, EN 1.4542, DIN X5CrNiCuNb16-4) is a martensitic precipitation-hardening stainless steel that delivers an exceptional combination of high strength, excellent corrosion resistance, and reliable mechanical properties at temperatures up to 600°F (316°C). This versatile material offers excellent toughness in both base metal and welds, with short-time, low-temperature heat treatments that minimize warpage and scaling.
Widely utilized across aerospace, chemical processing, petrochemical, food processing, paper manufacturing, and general metalworking industries, 17-4PH stainless steel provides superior corrosion resistance compared to standard hardenable stainless steels and performs comparably to Type 304 stainless in most media.
Chemical Composition (Weight %)
| Grade |
Carbon |
Manganese |
Phosphorus |
Sulfur |
Silicon |
Chromium |
Nickel |
Copper |
Columbium + Tantalum |
| 17-4PH (AISI 630) |
0.07 max |
1.00 max |
0.040 max |
0.030 max |
1.00 max |
15.00-17.50 |
3.00-5.00 |
3.00-5.00 |
0.15-0.45 |
Product Specifications
Product Type: Stainless seamless steel tube 17-4PH, 630
Production Methods: Hot rolled, cold rolled (drawn)
Outer Diameter (OD): 6mm to 219mm
Wall Thickness (WT): 0.5mm to 25.4mm
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