GS-25CrNiMo4 (1.6515) chemical composition
A Cr-Ni-Mo quenched-and-tempered grade from the withdrawn German cast-steel standards, not carried into EN 10293. The nickel addition improves toughness and hardenability over the CrMo grades; still specified on older drawings.
- Designation
- GS-25CrNiMo4
- Material no.
- 1.6515
- Standard
- SEW 515 / DIN 17205
- Also known as
- GS25CrNiMo4
- Family
- Carbon & low-alloy cast steel
Chemical composition (mass %)
| Element | min | max |
|---|---|---|
| CCarbon | 0.22 | 0.29 |
| SiSilicon | 0.30 | 0.60 |
| MnManganese | 0.60 | 1.00 |
| PPhosphorus | – | 0.025 |
| SSulphur | – | 0.025 |
| CrChromium | 0.80 | 1.20 |
| NiNickel | 0.80 | 1.20 |
| MoMolybdenum | 0.20 | 0.30 |
| FeIron | remainder | |
Basis of values: Limits per SEW 515 / DIN 17205.
We cast GS-25CrNiMo4
We sand cast carbon and low-alloy steel to EN 10293, EN 10213 and ASTM A216/A352, heat treat it at the foundry (water, oil or air quench) and, if required, machine it in the group's machine shop in Perama. Each heat is checked by spectrometer; orders ship with an EN 10204 3.1 certificate, with mechanical testing and NDT (UT, MT, PT) as specified.
- Sand casting at our foundry in Mandra, Attica; centrifugal casting for bushings, sleeves and liners
- Heat treatment at the foundry (water, oil or air quench); CNC machining in our machine shop in Perama
- Spectrometer analysis of every heat, mechanical testing and NDT
- EN 10204 3.1 inspection certificates; ISO 9001 (both plants) and ISO 14001 (foundry) certified
Other grades in this family
For information only, without warranty: limits per the cited standard or, where stated, typical or house values; ≈ marks a comparable grade, not an equivalent. The current edition of the standard, the purchase order and the drawing govern.