Find a steel grade by its code or material number
Search existing technical records using different spellings and standard designations. A matching name is not approval to substitute one material for another.
Enter a grade or code
Try a common code
How to interpret a result
Exact means that the query matches a registered name or code, not that every listed designation is interchangeable. Partial matches and spelling suggestions require confirmation. Family and designation-system filters narrow the existing records without creating new technical equivalences.
Check the actual order conditions
Compare chemical limits, mechanical requirements, product standard, section size, delivery condition, heat treatment and the material certificate. A commercial comparison, historical name and EN name–number identity are different relations. A technical reference does not mean that a grade is stocked or sold by Erkal.
Source coverage and limitations
The inherited source review is dated 11 September 2026. These translations do not constitute a new standards review. Individual manufacturer references have different scopes; the result card retains the relevant caution. The 8640 record still requires technical review. P20+S and P20+Ni remain trade search names, not official AISI grades.
Detailed records and source list (in Turkish) →Browse the recorded grade names
- S235JR (in Turkish)
- S275JR (in Turkish)
- S355JR (in Turkish)
- S355J2 (in Turkish)
- C15E (in Turkish)
- C22E (in Turkish)
- C35E (in Turkish)
- C40 (in Turkish)
- C45 (in Turkish)
- C45E / Ck45 (in Turkish)
- C50 (in Turkish)
- C55 (in Turkish)
- SAE 1018 (in Turkish)
- 16MnCr5 (in Turkish)
- 20MnCr5 (in Turkish)
- 20NiCrMo2-2 (in Turkish)
- 18CrNiMo7-6 (in Turkish)
- 25CrMo4 (in Turkish)
- 42CrMo4 / AISI 4140 (in Turkish)
- 34CrNiMo6 / AISI 4340 (in Turkish)
- 41Cr4 (in Turkish)
- AISI 8640 (in Turkish)
- 100Cr6 / AISI 52100 (in Turkish)
- 51CrV4 (in Turkish)
- 31CrMoV9 (in Turkish)
- 11SMn30 (in Turkish)
- 11SMnPb30 (in Turkish)
- X153CrMoV12 / AISI D2 (in Turkish)
- X210Cr12 / AISI D3 (in Turkish)
- X100CrMoV5 / AISI A2 (in Turkish)
- 100MnCrW4 / AISI O1 (in Turkish)
- 90MnCrV8 / AISI O2 (in Turkish)
- X40CrMoV5-1 / AISI H13 (in Turkish)
- X37CrMoV5-1 / AISI H11 (in Turkish)
- 40CrMnMo7 / AISI P20 (in Turkish)
- 40CrMnMoS8-6 / P20+S (in Turkish)
- 40CrMnNiMo8-6-4 / P20+Ni (in Turkish)
- 45NiCrMo16 (in Turkish)
- HS6-5-2C / AISI M2 (in Turkish)
- X5CrNi18-10 / AISI 304 (in Turkish)
- X2CrNiMo17-12-2 / AISI 316L (in Turkish)
- X20Cr13 / AISI 420 (in Turkish)
- X105CrMo17 / AISI 440C (in Turkish)