304 Stainless Steel Strip – Cold Rolled, Full Hard Temper (ASTM A240)
This 304 stainless steel strip is manufactured through precision cold rolling and annealing to achieve a full hard temper (HV 370-430 / Tensile 1130+ MPa). Designed for applications requiring high strength and excellent formability, it conforms to ASTM A240 and EN 10088 standards. Ideal for stamping, spring components, and precision cutting tools.
| Parameter | Specification |
| Grade | 304 (UNS S30400) |
| Process | Cold Rolled + Annealed + Skin Pass / Hard Rolled |
| Temper | Full Hard (FH) / 3/4H / 1/2H (Customizable) |
| Thickness | 0.1mm – 3.0mm (Tolerance: ±0.01mm) |
| Width | 3mm – 450mm (Slitting precision) |
| Hardness | HV 370 – 430 (Full Hard) |
| Tensile Strength | ≥ 1130 MPa (Full Hard) |
| Yield Strength | ≥ 880 MPa |
| Elongation | ≥ 3% (for FH) |
| Surface | 2B / BA / Matte (or as rolled) |
| Standard | ASTM A240 / EN 10088-2 / JIS G4305 |
High Hardness & Strength: Full hard temper provides superior wear resistance for demanding stamping and forming.
Consistent Thickness: Precision cold rolling ensures minimal thickness variation for automated production lines.
Excellent Flatness: Annealed and leveled to prevent camber and wave issues during slitting or pressing.
Corrosion Resistance: 18% Chromium content offers reliable rust protection in indoor and mild industrial environments.
FAQ:
Q: What is the difference between full hard and annealed 304 strip?
A: Full hard 304 strip is cold rolled to a high reduction rate without subsequent softening annealing, achieving hardness up to HV 430. Annealed 304 is softer (HV ≤ 200) and suited for deep drawing. Our full hard strip is ideal for springs and structural parts requiring high yield strength.
Q: Can you supply 304 strip with specific hardness (e.g., 3/4 hard)?
A: Yes. We offer custom tempers including 1/4H, 1/2H, 3/4H, and FH. Please specify your required HV or tensile strength range when inquiring.
Q: What is the standard coil ID and weight?
A: Standard ID: 508mm or 610mm. Coil weight: 2-5 tons (customizable). Width tolerance can be controlled within ±0.05mm for precision slitting.
