ASTM A564 17-4PH AISI 630 AMS 5643 UNS S17400 Round bar Manufacturer in China
We are a professional manufacturer of stainless steel 17-4PH bars, stainless steel round bars supplier in China.
ASTM A564/A564M specification for hot-rolled and cold-finished precipitation-hardening stainless steel bars. It is widely used for its excellent combination of strength, corrosion resistance.
630 stainless steel (more commonly known as 17-4 PH, or simply 17-4; also known as UNS S17400) is a grade of martensitic precipitation hardened stainless steel. It contains approximately 15–17.5% chromium and 3–5% nickel, as well as 3–5% copper.[1] The name comes from the chemical makeup which is approximately 17% chromium and 4% nickel. SUS630 is the same as 17-4PH, and they both refer to the same grade.
Chemical Composition of 17-4 PH S17400 (Typical values):
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.07 |
| Chromium (Cr) | 15.5 – 17.5 |
| Nickel (Ni) | 3.0 – 5.0 |
| Copper (Cu) | 3.0 – 5.0 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Niobium (Nb) + Tantalum (Ta) | 0.15 – 0.45 |
Mechanical Properties of 17-4 PH S17400
| Condition | Ultimate Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|
| H900 | ~1310 | ~1170 | ~10 | ~44 |
| H1025 | ~1170 | ~1030 | ~12 | ~38 |
| H1150 | ~1050 | ~860 | ~14 | ~32 |
Note: The heat treatment conditions (H900, H1025, etc.) refer to the temperature (in °F) at which the material is aged.
Standards and Specifications:
ASTM A564/A564M.
Available in various forms, including bars, rods, and forgings..
17-4PH Equivalent Grades by Standard:
| Standard | Equivalent Grade |
|---|---|
| UNS (Unified Numbering System) | UNS S17400 |
| ASTM/ASME | A564/A564M Type 630 |
| EN/DIN | 1.4542 (X5CrNiCuNb16-4) |
| ISO | X5CrNiCuNb16-4 |
| AFNOR (France) | Z6CNU17-04 |
| JIS (Japan) | SUS630 |
| BS (British Standard) | 630S31 |
Available Sizes:
-
- Round bars are available in a wide range of diameters, typically from 6 mm to 250 mm (1/4 inch to 10 inches) or larger.
- Custom sizes can also be manufactured upon request.
- Surface Finish:
- Available in multiple finishes, such as:
- Hot rolled
- Cold drawn
- Turned and polished
- Centerless ground for precision applications.
- Available in multiple finishes, such as:
-
Standards and Specifications:
- ASTM A564/A564M.
- AMS 5643.
- EN/DIN 1.4542.
- UNS S17400.
A564 17-4PH Round Bar is a versatile, high-strength stainless steel product that conforms to the ASTM A564/A564M specification for hot-rolled and cold-finished precipitation-hardening stainless steel bars.
