C10 equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for C10 across standard systems. Each match is graded so you can see how safe the substitution is. Unalloyed low-carbon case-hardening steel — full C10 data sheet.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| 1010 | AISI / SAE | Identical | AISI/SAE 1010 (G10100): C 0.08–0.13, Mn 0.30–0.60 — same window. |
| 045M10 | BS (superseded British) | Identical | BS 970 045M10: C 0.07–0.13, Mn 0.30–0.60. |
| 10 | GB/T (China) | Identical | GB/T 699 grade 10 (10#): C 0.07–0.13, Mn 0.35–0.65. |
| 10 / 10kp | GOST (Russia/CIS) | Identical | GOST 1050 Steel 10: C 0.07–0.14, Mn 0.35–0.65. |
| S10C / S09CK | JIS (Japan) | Identical | JIS G4051 S10C: C 0.08–0.13, Mn 0.30–0.60; S09CK is the case-hardening quality. |
| 1008 | AISI / SAE | Near | C ≤ 0.10, Mn 0.30–0.50: covers the lower half of C10; the usual US cold-heading/sheet grade. |
| C8C / C10C | EN (European) | Near | EN 10263-2 cold-heading wire grades (C 0.06–0.10 / 0.08–0.13) — what 'C8' usually refers to. |
| C15 | EN (European) | Near | Next carbon step (0.12–0.18 %) with slightly stronger core. |
Identical = same composition and mechanical limits within rounding. Near = one limit differs (e.g. carbon max or impact temperature). Functional = interchangeable for most uses after an engineering check.
How the matches are graded
Identical means the chemical composition windows overlap so that material certified to one specification meets the other without deviation, and the mechanical minimums are the same or the other is inside them — mills usually dual-certify. Near means one limit differs (a carbon maximum, an impact temperature, a strength minimum or a delivery condition) and a substitution needs a one-line engineering check. Functional means the grades serve the same purpose but are not the same steel — a designer can often use one for the other, but only after re-checking the design.
C10 in AISI / SAE
- 1010 — Identical AISI/SAE 1010 (G10100): C 0.08–0.13, Mn 0.30–0.60 — same window.
- 1008 — Near C ≤ 0.10, Mn 0.30–0.50: covers the lower half of C10; the usual US cold-heading/sheet grade.
C10 in BS (superseded British)
- 045M10 — Identical BS 970 045M10: C 0.07–0.13, Mn 0.30–0.60.
C10 in GB/T (China)
- 10 — Identical GB/T 699 grade 10 (10#): C 0.07–0.13, Mn 0.35–0.65.
C10 in GOST (Russia/CIS)
- 10 / 10kp — Identical GOST 1050 Steel 10: C 0.07–0.14, Mn 0.35–0.65.
C10 in JIS (Japan)
- S10C / S09CK — Identical JIS G4051 S10C: C 0.08–0.13, Mn 0.30–0.60; S09CK is the case-hardening quality.
C10 in EN (European)
- C8C / C10C — Near EN 10263-2 cold-heading wire grades (C 0.06–0.10 / 0.08–0.13) — what 'C8' usually refers to.
- C15 — Near Next carbon step (0.12–0.18 %) with slightly stronger core.
Superseded names for C10
- Ck10 — DIN 17210 (withdrawn): = C10E (1.1121).
- C10 (1.0301) — DIN 17210: Base quality.
- 045M10 / 040A10 — BS 970
- XC10 — NF A 35-551
Key data for C10
Full composition, mechanical properties by thickness, heat treatment and applications for C10 →
Verified against EN 10084:2008. Last checked: September 2026.