Bohler C Si Mn Cr Mo V W Co Others EN / DIN AISI JIS Typical HRC
S200 0.75 0.25 0.30 4.10   1.10 18.00     1.3355 T1 SKH2 64 - 66
                    HS18-0-1      
S500 1.10 0.50 0.20 3.90 9.20 1.00 1.40 7.80   1.3247 M42 SKH59 67 - 69
                    HS2-9-1-8      
S600 0.90     4.10 5.00 1.80 6.20     1.3343 ~M2 reg.C SKH51 64 - 66
                    HS6-5-2C      
            ~1.3554 LW      
S630 0.95     4.00 4.00 2.00 4.00   Al 0.50       64 - 66
                           
S607 1.21 0.25 0.30 4.05 4.95 2.85 6.20     1.3344 ~M3 SKH53 58 - 62
                    HS6-5-3      
S705 0.92 0.40 0.30 4.10 5.00 1.90 6.20 4.80   1.3243 ~M35 SKH55 64 - 66
                    HS6-5-2-5 ~M41    
S290 2.00 0.50 0.30 3.80 2.50 5.10 14.30 11.00   patent     66 - 70
MICROCLEAN                          
S390 1.64 0.60 0.30 4.80 2.00 4.80 10.40 8.00         65 - 69
MICROCLEAN                          
S590 1.29 0.60 0.30 4.20 5.00 3.00 6.30 8.40         65 - 67
MICROCLEAN                          
S690 1.35 0.60 0.30 4.10 5.00 4.10 5.90       ~M4 SKH54 64 - 66
MICROCLEAN                          
S790 1.29 0.60 0.30 4.20 5.00 3.00 6.30       ~M3   64 - 66
MICROCLEAN                          
MICROCLEAN: Powder Steel with finest powder and highest cleanliness
聯頤企業股份有限公司 UNISON ENTERPRISE CO., LTD.
3F-3 NO. 56, Keelung Road Sec. 2, Taipei, Taiwan, R.O.C
Tel: 886-2-27220591 Fax: 886-2-27255613  Email: unison.metals@msa.hinet.net