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2020년 3월 25일

B639 R30155, Formerly Grade 661, Cobalt Alloy

B639 R30155, Formerly Grade 661, Cobalt Alloy STEELMAX Metsl Story   ASTM B639 R30155 재질은 고온용으로 쓰이는 환봉 규격입니다. 석출 경화 열처리로 인장강도 760 MPa minimum […]
B639 R30155, Formerly Grade 661, Cobalt Alloy
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