Hy-Tuf Low Alloy Steel Similar Compositions Poland: L25SHNM to PN-H-83160 USA: 31 to ASTM A579, UNS K32550 Tradenames: CRUCIBLE SA22 Hy-Tuf Condition Quenched & tempered UNS number K32550 US name AMS 6425, ASTM A579 Grade 31 MODULUS METALSand Casting in Turkey, Permanent Mold Casting in Turkey, Gravity Die Casting in Turkey, Pressure Die Casting in Turkey, High-Pressure Die Casting … Continue reading Hy-Tuf Low Alloy Steel Similar Compositions