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SPECIFICATIONS HARDNESS(HRC) CHEMICAL
ANALYSIS(%)
Grade
(SAEJ441)
Nominal size
(m/m)
Limits for diameter &
cut length(m/m)
Kyoung
Sung
SAE J441
KCW 2 0.2 0.15 ~ 0.24 48MIN      
KCW 3 0.3 0.25 ~ 0.35 48MIN   Carbon 0.45 ~ 0.72
KCW 4(CW-20) 0.4 0.36 ~ 0.44 48MIN 48MIN MANGANESS 0.60 ~ 1.20
KCW 6(CW-23) 0.6 0.57 ~ 0.63 46MIN 48MIN SILICON 0.10 ~ 0.30
KCW 8(CW-32) 0.8 0.78 ~ 0.82 44MIN 45MIN PHOSPHORUS 0.045MAX
KCW 10(CW-41) 1.0 0.98 ~ 1.02 43MIN 42MIN SULPHUR 0.050MAX
KCW 12(CW-47) 1.2 1.18 ~ 1.22 42MIN 41MIN    
KCW 14(CW-54) 1.4 1.38 ~ 1.42 40MIN 39MIN    
KCW 16(CW-62) 1.6 1.58 ~ 1.62 40MIN 36MIN    
KCW 20 2.0 1.98 ~ 2.02 38MIN      
KCW 22 2.2 2.18 ~ 2.22 38MIN      

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