17-4PH (SS 630) equivalents, chemistry & properties.
17-4PH (SS 630) is a precipitation-hardening stainless used for shafts, valve stems, aerospace, high-strength fasteners. Below are its equivalent designations in nine standards, chemical composition, mechanical properties and density.
17-4PH (SS 630) equivalent grades
- USA (ASTM / AISI / SAE)
- ASTM A564 Type 630
- UNS
- S17400
- Europe (EN)
- X5CrNiCuNb16-4
- Werkstoff No. (W.Nr)
- 1.4542
- Japan (JIS)
- SUS630
- China (GB)
- 05Cr17Ni4Cu4Nb
Key data
- Family
- Precipitation-hardening stainless
- Density
- 7.78 g/cm³
- Typical mechanical
- H1150: TS ≥930 MPa, YS ≥725 MPa; H900: TS ≥1310 MPa
- Typical uses
- Shafts, valve stems, aerospace, high-strength fasteners
- Weight
- Calculate weight in 17-4PH (SS 630)
17-4PH (SS 630) chemical composition (weight %)
| C | Si | Mn | P | S | Cr | Ni | Cu | Nb+Ta |
|---|---|---|---|---|---|---|---|---|
| ≤0.07 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 15.0–17.5 | 3.0–5.0 | 3.0–5.0 | 0.15–0.45 |
Grades similar to 17-4PH (SS 630)
Frequently asked questions
What is the equivalent of 17-4PH (SS 630)?
17-4PH (SS 630) equivalents: USA (ASTM / AISI / SAE) ASTM A564 Type 630; UNS S17400; Europe (EN) X5CrNiCuNb16-4; Werkstoff No. (W.Nr) 1.4542; Japan (JIS) SUS630; China (GB) 05Cr17Ni4Cu4Nb. Equivalents are close but not always identical; check the standard on your order.
What is the chemical composition of 17-4PH (SS 630)?
17-4PH (SS 630): C ≤0.07, Si ≤1.00, Mn ≤1.00, P ≤0.040, S ≤0.030, Cr 15.0–17.5, Ni 3.0–5.0, Cu 3.0–5.0, Nb+Ta 0.15–0.45 (weight %).
What is the density of 17-4PH (SS 630)?
About 7.78 g/cm³ (7,780 kg/m³), the value used for weight calculations.
Need 17-4PH (SS 630)?
Steel Impex India, Mumbai, supplies 17-4PH (SS 630) in pipes, plates, sheets, bars and fittings as available, with mill test certificates. Send the grade, standard, size and quantity.