51CrV4 is a high strength quench and tempering steel suitable for quenched and tempered springs. What Ovako offer includes a number of variants with tight chemical composition, suitable for different applications and material thicknesses. They all meet the overall requirements set by EN10089.
Variant SB4292 is a strong variant with hardenability in the upper part of the +HH band and low content of non-metallic inclusions.
Variant SB4290 has somewhat lower hardenability, but is still strong.
Variant SB4282 has medium hardenability and is a good start for applications with normal requirements.
Variant SB4212 which has a good surface hardness, but it will not through harden for thicker dimensions. It is instead a good pick for thin sections.
Variants Ovako 593B and 593Q are also mainly used for springs, but frequently used for shafts and machine components.
Ovako 593Q is an IQ (isotropic quality) variant.
1.8159, 735A51, SS2230, SB4292 - 52CrMn5-4, SB4290 - 52CrMn5-4, SB4282 - 52CrMn4-4, SB4212- 50CrMn4-4, AISI 6150