Common technical standards for domestic valve materials casting copper alloy technical conditions (continued Table 3) tensile strength σ b MPa (kgf / mm 2 ) Yield Strength σ 0.2 MPa (kgf / mm 2 ) Elongation δ 5 % Brinell hardness  HB Graphite crucibles have good thermal conductivity and high temperature resistance. During high-temperature use, their coefficient of thermal expansion is small, and they have certain strain resistance to rapid heating and cooling. Strong corrosion resistance to acidic and alkaline solutions, with excellent chemical stability. Graphite Crucible,Foundry Crucibles,Graphite Crucible Sizes,Graphite Crucible For Aluminum CARBONS TECH&CREATION(HENAN) INDUSTRY CO.,LTD , https://www.kyisostaticgraphites.com Serial number Alloy grade Casting method Mechanical properties, not less than 14 ZCuAl9Mn2 J 440 (44.9)  20 930 15 ZCuAl9Fe4Ni4Mn2 S 630 (64.3) 250 (25.5) 16 1570 16 ZCuAl10Fe3 S 490 (50.0) 180 (18.4) 13 980 * J 540 (55.1) 200 (20.4) 15 1080 * Li, La 540 (55.1) 200 (20.4) 15 1080 * 17 ZCuAl10Fe3Mn2 S 490 (50.0)  15 1080 J 540 (55.1)  20 1175 18 ZCuZn38 S 295 (30.0)  30 590 J 295 (30.0)  30 685 19 ZCuZn25Al16Fe3Mn3 S 725 (73.9) 380 (38.7) 10 1570 * J 740 (75.5) 400 (40.8) * 7 1665 * Li, La 740 (75.5) 400 (40.8) 7 1665 * 20 ZCuZn26Al4Fe3Mn3 S 600 (61.2) 300 (30.6) 18 1175 * J 600 (61.2) 300 (30.6) 18 1275 * Li, La 600 (61.2) 300 (30.6) 18 1275 * twenty one ZCuZn31Al2 S 295 (30.0)  12 785 J 390 (39.8)  15 885 twenty two ZCuZn35Al2Mn2Fe2 S 450 (45.9) 170 (17.3) 20 980 * J 475 (48.4) 200 (20.4) 18 1080 * Li, La 475 (48.4) 200 (20.4) 18 1080 * twenty three ZCuZn38Mn2Pb2 S 245 (25.0)  10 685 J 345 (35.2)  18 785 twenty four ZCuZn40Mn2 S 345 (35.2)  20 785 J 390 (39.8)  25 885 25 ZCuZn40Mn3Fe1 S 440 (44.9)  18 980 J 490 (50.0)  15 1080 26 ZCuZn33Pb2 S 180 (18.4) 70 (7.1) * 12 490 * 27 ZCuZn40Pb2 S 220 (22.4)  15 785 * J 280 (28.6) 120 (12.2) * 20 885 * 28 ZCuZn16Si4 S 345 (35.2) ã€Print】 ã€Close】
Common technical standards for domestic valve materials casting copper alloy technical conditions (continued Table 3)
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