37MnSi5 / 1.5122 is a less common heat-treatable steel that is mainly used for spare parts, for example for Deutsche Bahn. It was last standardized in DIN 17200 in December 1951.
1.6580
1.6582
1.6959
1.7033
1.7035
1.7218
1.7220
1.7225
1.7228
1.7707
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