日本JIS标准冷镦用碳钢的钢号与化学成分: 钢号与化学成分(质量分数)(%) 钢号 C Si Mn P≤ S≤ Al SWRCH6R ≤0.08 - ≤0.60 0.04 0.04 - SWRCH8R ≤0.10 - ≤0.60 0.04 0.04 - SWRCH10R 0.08-0.13 - 0.60-0.60 0.04 0.04 - SWRCH12R 0.10-0.15 - 0.60-0.60 0.04 0.04 - SWRCH15R 0.13-0.18 - 0.60-0.60 0.04 0.04 - SWRCH17R 0.15-0.20 - 0.60-0.60 0.04 0.04 - SWRCH6A ≤0.08 ≤0.10 ≤0.60 0.03 0.035 ≤0.02 SWRCH8A ≤0.10 ≤0.10 ≤0.60 0.03 0.035 ≤0.02 SWRCH10A 0.08-0.13 ≤0.10 0.60-0.60 0.03 0.035 ≤0.02 SWRCH12A 0.10-0.15 ≤0.10 0.60-0.60 0.03 0.035 ≤0.02 SWRCH15A 0.13-0.18 ≤0.10 0.60-0.60 0.03 0.035 ≤0.02 SWRCH16A 0.13-0.18 ≤0.10 0.60-0.90 0.03 0.035 ≤0.02 SWRCH18A 0.15-0.20 ≤0.10 0.60-0.90 0.03 0.035 ≤0.02 SWRCH19A 0.15-0.20 ≤0.10 0.70-1.00 0.03 0.035 ≤0.02 SWRCH20A 0.18-0.20 ≤0.10 0.30-0.60 0.03 0.035 ≤0.02 SWRCH22A 0.18-0.23 ≤0.10 0.70-1.00 0.03 0.035 ≤0.02 SWRCH10K 0.08-0.13 0.10-0.35 0.30-0.60 0.03 0.035 - SWRCH12K 0.10-0.15 0.10-0.35 0.30-0.60 0.03 0.035 - SWRCH15K 0.13-0.18 0.10-0.35 0.30-0.60 0.03 0.035 -