Ectosome 로고

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thép carbon

khái quát về carbon steel

Classification Type Chemical composition
C SI Mn P S Cu Ni Cr Ni+Cr
Carbon tool
steel 		SK2M 1.10~1.3 0.35MAX 0.5MAX 0.03MAX 0.03MAX 0.25MAX 0.25MAX 0.3MAX
SK3M 1.00~1.1 0.35MAX 0.5MAX 0.03MAX 0.03MAX 0.25MAX 0.25MAX 0.3MAX
SK4M 0.9~1.0 0.35MAX 0.5MAX 0.03MAX 0.03MAX 0.25MAX 0.25MAX 0.3MAX
SK5M 0.8~0.9 0.35MAX 0.5MAX 0.03MAX 0.03MAX 0.25MAX 0.25MAX 0.3MAX
SK6M 0.70~0.8 0.35MAX 0.5MAX 0.03MAX 0.03MAX 0.25MAX 0.25MAX 0.3MAX
SK7M 0.60~0.7 0.35MAX 0.5MAX 0.03MAX 0.03MAX 0.25MAX 0.25MAX 0.3MAX
Carbon steel S30CM 0.27~0.35 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX 0.35MAX
S35CM 0.32~0.38 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX 0.35MAX
S45CM 0.42~0.48 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX 0.35MAX
S50CM 0.47~0.53 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX 0.35MAX
S55CM 0.52~0.58 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX 0.35MAX
S60CM 0.55~0.65 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX -
S65CM 0.60~0.70 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX -
S70CM 0.65~0.75 0.15~0.35 0.60~0.9 0.03MAX 0.035MAX 0.3MAX 0.2MAX 0.2MAX -

APPLICATION

S45CM Clutch part, Machine part Bộ phận clutch, bộ phận xích
S50CM Spring lò xo
S55CM Machine part linh kiện máy móc
S60CM Chain part, woodwork supplies, Blind Phụ kiện dây chuyền, đồ gỗ, máy xay sinh tố
S65CM Spring, Clutch part Bộ phận lò xo, clutch
S70CM Washer, Saw , Spring Wassha, cưa, lò xo
SK2M Saw, Spring, Camera shutter Saw, Spring, Camera shutter
SK3M Saw, Spring, knife cưa, lò xo, dao
SK4M Spring, Gage, Saw, Needle ống đựng bút, lò xo, thước đo, cưa, máy dệt kim
SK5M Spring, Saw, Needle lò xo, thước đo, cưa, máy dệt kim
SK6M Spring, Saw, Clutch part, Washer 2. Carbon steel Lò xo, cưa, clutch, washa 2. Thép carbon

MECHANICAL PROPERTY

Symbol of temper A S R QT
Classification Annealed Skin passed Roiled Quenching & Tempered
Type Hardness (Hv) Tensile Strength (kgf/mm2) Tensile Strength (kgf/mm2) Hardness (Hv) Hardness (Hv) Hardness (Hv) Tensile Strength (kgf/mm2)
SK2M 180-220 60-70 15Max 220Max 220-280 350-850 112-∞
SK3M 180-220 60-70 15Max 220Max 220-280 350-850 112-∞
SK4M 180-200 50-70 20Max 210Max 210-270 350-700 112-∞
SK5M 170-200 50-70 20Max 210Max 210-270 350-700 112-∞
SK6M 170-190 50-65 25Max 200Max 200-260 350-700 112-∞
SK7M 150-190 50-60 25Max 200Max 220-260 350-700 112-∞

SURFACE FINISH

Surface Finish Remarks
Standard Color(Dark-Blue) Heat Treatment
White Color Grinding After Heat Treatment
Blue or Yellow Color Coloring AfterGrinding