16MnCr5 equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for 16MnCr5 across standard systems. Each match is graded so you can see how safe the substitution is. Alloy case-hardening steel — full 16MnCr5 data sheet.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| 5115 | AISI / SAE | Near | SAE 5115 (UNS G51150): C 0.13–0.18, Mn 0.70–0.90, Cr 0.70–0.90 — lower Mn and Cr, somewhat lower hardenability. SAE 5120 is closer on hardenability. |
| 590M17 | BS (superseded British) | Near | BS 970 590M17: C 0.14–0.20, Mn 1.00–1.30, Cr 0.60–1.00 (Cr window slightly lower). |
| 20MnCr5 | EN (European) | Near | 1.7147: C 0.17–0.22, same Mn/Cr; higher core strength (900–1200 MPa) for larger gears. |
| 16MnCrS5 | EN (European) | Near | Free-machining variant with 0.020–0.040 % S; same case/core response. |
| 16CrMn / 20CrMn | GB/T (China) | Near | GB/T 3077 20CrMn: C 0.17–0.23, Mn 0.90–1.20, Cr 0.90–1.20; 16MnCr5 sits at the low-carbon end. |
| 18KhG | GOST (Russia/CIS) | Near | GOST 4543 18KhG: C 0.15–0.21, Mn 0.90–1.20, Cr 0.90–1.20. |
| SCr415 / SCr420 | JIS (Japan) | Near | JIS G4053 SCr415: C 0.13–0.18, Mn 0.60–0.90, Cr 0.90–1.20; Mn lower than 16MnCr5. |
| 8620 | AISI / SAE | Functional | Ni-Cr-Mo case-hardening steel, better toughness and hardenability; the US default for the same parts. |
| C15 | EN (European) | Functional | Unalloyed case-hardening steel for small, lightly loaded parts. |
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.
16MnCr5 in AISI / SAE
- 5115 — Near SAE 5115 (UNS G51150): C 0.13–0.18, Mn 0.70–0.90, Cr 0.70–0.90 — lower Mn and Cr, somewhat lower hardenability. SAE 5120 is closer on hardenability.
- 8620 — Functional Ni-Cr-Mo case-hardening steel, better toughness and hardenability; the US default for the same parts.
16MnCr5 in BS (superseded British)
- 590M17 — Near BS 970 590M17: C 0.14–0.20, Mn 1.00–1.30, Cr 0.60–1.00 (Cr window slightly lower).
16MnCr5 in EN (European)
- 20MnCr5 — Near 1.7147: C 0.17–0.22, same Mn/Cr; higher core strength (900–1200 MPa) for larger gears.
- 16MnCrS5 — Near Free-machining variant with 0.020–0.040 % S; same case/core response.
- C15 — Functional Unalloyed case-hardening steel for small, lightly loaded parts.
16MnCr5 in GB/T (China)
- 16CrMn / 20CrMn — Near GB/T 3077 20CrMn: C 0.17–0.23, Mn 0.90–1.20, Cr 0.90–1.20; 16MnCr5 sits at the low-carbon end.
16MnCr5 in GOST (Russia/CIS)
- 18KhG — Near GOST 4543 18KhG: C 0.15–0.21, Mn 0.90–1.20, Cr 0.90–1.20.
16MnCr5 in JIS (Japan)
- SCr415 / SCr420 — Near JIS G4053 SCr415: C 0.13–0.18, Mn 0.60–0.90, Cr 0.90–1.20; Mn lower than 16MnCr5.
Superseded names for 16MnCr5
- 16MnCr5 (1.7131) — DIN 17210 (withdrawn): Name and number unchanged; standard replaced by EN 10084.
- 590M17 / 527M17 — BS 970
- 16MC5 — NF A 35-551
- 16MnCr5 — UNI 7846
Key data for 16MnCr5
Full composition, mechanical properties by thickness, heat treatment and applications for 16MnCr5 →
Verified against EN 10084:2008. Last checked: September 2026.