ALLOY TOOL STEELS SKD GRADE (FOR COLD WORK)
MATERIALS GRADE |
CHEMICAL COMPOSITION % | ||||||||
C | Si | Mn | P | S | Cr | Mo | W | V | |
SKS3 | 0.90~1.00 | 0.35 max. | 0.90~1.20 | 0.030 max. | 0.030 max. | 0.50~1.00 | 0.50~1.00 | ||
SKS31 | 0.95~1.05 | 0.35 max. | 0.90~1.20 | 0.030 max. | 0.030 max. | 0.80~1.20 | 0.50~1.00 | ||
SKS93 | 1.00~1.10 | 0.50 max. | 0.80~1.10 | 0.030 max. | 0.030 max. | 0.20~0.60 | |||
SKS94 | 0.90~1.00 | 0.50 max. | 0.80~1.10 | 0.030 max. | 0.030 max. | 0.20~0.60 | |||
SKS95 | 0.80~0.90 | 0.50 max. | 0.80~1.10 | 0.030 max. | 0.030 max. | 0.20~0.60 | |||
SKD1 | 1.90~2.20 | 0.10~0.60 | 0.20~0.60 | 0.030 max. | 0.030 max. | 11.00~13.00 | |||
SKD2 | 2.00~2.30 | 0.10~0.40 | 0.30~0.60 | 0.030 max. | 0.030 max. | 11.00~13.00 | 0.60~0.80 | ||
SKD10 | 1.45~1.60 | 0.10~0.60 | 0.20~0.60 | 0.030 max. | 0.030 max. | 11.00~13.00 | 0.70~1.00 | 0.70~1.00 | |
SKD11 | 1.40~1.60 | 0.40 max. | 0.60 max. | 0.030 max. | 0.030 max. | 11.00~13.00 | 0.80~1.20 | 0.20~0.50 | |
SKD12 | 0.95~1.05 | 0.10~0.40 | 0.40~0.80 | 0.030 max. | 0.030 max. | 4.80~5.50 | 0.90~1.20 | 0.15~0.35 |
QUENCH-TEMPER HARDNESS (FOR TEST PIECE)
SKS3 SKS31 SKS93 SKS94 SKS95 SKD1 SKD2 SKD10 SKD11 SKD12 |
830 Oil quench 830 Oil quench 820 Oil quench 820 Oil quench 820 Oil quench 970 Air cooled 970 Air cooled 1020 Air cooled 1030 Air cooled 970 Air cooled |
180 Air cooled 180 Air cooled 180 Air cooled 180 Air cooled 180 Air cooled 180 Air cooled 180 Air cooled 180 Air cooled 180 Air cooled 180 Air cooled |
60 min. 61 min. 63 min. 61 min. 59 min. 62 min. 62 min. 61 min. 58 min. 60 min. |