JIS G3311 · ASTM W1-8 · GB T8 · EN C80W1 / 1.1525
SK5 is a high-carbon tool steel designation used as a candidate for saw, spring and cutting components. Chemistry, delivery condition, microstructure and finished-part properties must be verified against the governing standard and order specification.
| Element | C | Si | Mn | P (max) | S (max) | Cr (max) |
|---|---|---|---|---|---|---|
| % | 0.80-0.90 | 0.10-0.35 | 0.10-0.50 | 0.030 | 0.030 | 0.30 |
| Condition | Hardness | Tensile Strength |
|---|---|---|
| Annealed (spheroidized) | ≤212 HB | ≤750 MPa |
| Hardened & Tempered | 58-62 HRC | 1800-2200 MPa |
Composition, hardness and mechanical-property tables are grade references, not guaranteed supply values. Verify the applicable standard edition, product form, condition and order-specific acceptance criteria.
| Parameter | Range |
|---|---|
| Thickness | State the required value and tolerance; confirm grade-specific feasibility |
| Width | State the required value, tolerance and edge condition |
| Delivery Condition | Annealed / Hardened & Tempered / Blue / Gold / Polished |
| Edge | Slit / Round / Square |
| Standard | JIS G3311, ASTM A682, GB/T 1298, EN ISO 4957 |
| JIS | GB | ASTM/AISI | EN/DIN |
|---|---|---|---|
| SK5 | T8 | W1-8 / 1080 | C80W1 / 1.1525 |
Band saw, circular saw, hand saw blades. Hardened & tempered to 58-62 HRC for cutting edge retention.
Flat springs, retaining clips, lock washers. Excellent fatigue resistance after heat treatment.
Woodworking tools, jigs, scrapers, measuring tapes. Good wear resistance with consistent hardness.
Read the SK5 vs SK4 comparison and heat-treatment guide, or review saw blade steel strip applications.
SK4 (higher carbon) · 65Mn (spring steel) · SKS51 (cold work die)