Chemical Composition Base Element Fe (Iron) Mechanical Properties Ultimate Tensile Strength 7.25 to 8.7 ksi Vickers Hardness 500 to 600 HV Other Information Material Class Ferrous Alloy Alloy Family Cast Iron and Iron Alloys Alloy Group Iron alloys Alloy Sub-Group Miscellaneous iron alloy Country Japan Standards Body JSA (Japan) Description Industrially important magnetically hard materials (permanent magnets); sintered. Designation S1 Specification Type Standard Specification JIS C2502 Specification Year 1998 Specification Status Active Specification Status Notes active 1998 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Available forms Casting Links Organizations Japanese Industrial Standards Committee (JISC)
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Chemical Composition

Mechanical Properties

7.25 to 8.7

ksi