C10 equivalent grades: ASTM, EN, JIS, GB, DIN
C10 is unalloyed low-carbon case-hardening steel specified in EN 10084. What follows is the substitution list: 7 standard systems, and for each candidate the clause that makes it an exact match or stops it being one. The full C10 data sheet carries the composition and mechanical tables.
Last updated
Where a drawing says C10, 1010, 045M10, 10 and 2 more satisfies it as written, with no concession needed. 1008, SAE 1010, C8C / C10C and 1 more differ by one requirement, which is a line on the order rather than a redesign. Counted by system: 2 in AISI / SAE, 1 in BS (superseded British), 1 in GB/T (China), 1 in GOST (Russia/CIS), 1 in JIS (Japan), 1 in ASTM / ASME, 2 in EN (European).
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| 045M10 | BS (superseded British) | Identical | BS 970 045M10: C 0.07–0.13, Mn 0.30–0.60.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. |
| SAE 1010 | ASTM / ASME | Near | EN 10084 C10 / 1.0301: 0.07–0.13 % C, 0.30–0.60 % Mn — the same steel in European designation, used as a case-hardening grade. The EN standard adds hardenability and case-depth requirements that SAE 1010 does not carry. |
| 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, near and functional are defined once on the grade index; the reason column below says which limit differs in each case.
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C10 in BS (superseded British)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 ASTM / ASME
- SAE 1010 — Near EN 10084 C10 / 1.0301: 0.07–0.13 % C, 0.30–0.60 % Mn — the same steel in European designation, used as a case-hardening grade. The EN standard adds hardenability and case-depth requirements that SAE 1010 does not carry.
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.