Chemical Composition
Designation |
Chemical Composition (%) |
C |
Si |
Mn |
P |
S |
Cu |
Ni |
Cr |
| JIS SK5M |
0.80
-0.90 |
0.35↓ |
0.50↓ |
0.030↓ |
0.030↓ |
0.030↓ |
0.25↓ |
0.20↓ |
| JIS SK5M |
0.60
-0.70 |
0.35↓ |
0.50↓ |
0.030↓ |
0.030↓ |
0.030↓ |
0.25↓ |
0.20↓ |
| SAE1065 |
0.59
-0.70
|
0.15
-0.30
|
0.60
-0.90
|
0.040↓ |
0.050↓ |
0.030↓ |
0.25↓ |
0.20↓ |
Dimension
| |
4" (101.6m/m) |
5" (127m/m) |
6" (152.4m/m) |
8" (203.2m/m) |
10" (254m/m) |
12" (304.8m/m) |
| 0.05 |
 |
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| 0.10 |
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| 0.15 |
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| 0.20 |
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| 0.25 |
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| 0.30 |
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| 0.35 |
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| 0.40 |
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| 0.45 |
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| 0.50 |
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| 0.55 |
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| 0.60 |
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| 0.65 |
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| 0.7 |
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| 0.8 |
|
 |
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| 0.9 |
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| 1.0 |
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| 1.2 |
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| 1.5 |
|
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| 1.6 |
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| 2.0¡ô |
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In Stock Please Consult Factory Not Available
Unhardened Material
Material |
Annealed |
R |
Hardness |
Tensile/Strength kg/mm² |
Elongation% |
Hardness |
SK5M |
200↓ |
70↓ |
20%↑ |
220°-280° |
SK7M |
190↓ |
60↓ |
25%↑ |
200°-260° |
Martensite Hardened Material
The tensile strength of martensite hardened steel strip varies from 100Kg/mm² to 220Kg/mm² for SK5M and from 92KG/mm² to 210Kg/mm² for SK7M which will depend on customers special requirements. Our standard hardness which varies which the thickness of the material is shown below.
Thickness In m/m |
Vickers |
Rockwell C Scale (HRC) |
Shore (HS) |
Up to 0.1 |
HV620°±20° |
(56°) |
(75°) |
0.2 |
HV600°±20° |
(55°) |
(74°) |
0.3 |
HV580°±20° |
(54°) |
(72°) |
0.4 |
HV560°±20° |
(53°) |
(71°) |
0.5 |
HV550°±20° |
(52°) |
(70°) |
0.6 |
HV530°±20° |
(51°) |
(68°) |
0.7 |
HV510°±20° |
(50°) |
(66.5°) |
0.8 |
HV500°±20° |
(49°) |
(66°) |
0.9 |
HV485°±20° |
(48°) |
(64°) |
1.0 |
HV470°±20° |
(47°) |
(63°) |
1.1 and over |
HV460°±20° |
(46°) |
(62°) |
( ) only for reference
Bainite Hardened Material
The hardness of the bainite hardened material ranges from HV280¢X to 450¢X which will be as per customer´s special order.
Finish: Bright white or bright blue
Thickness Tolerance
Thickness |
Width200↓ |
Width200-500 |
0.25-0.60 |
±0.15 |
±0.25 |
0.60-1.20 |
±0.20 |
±0.30 |
1.20-4.00 |
±0.25 |
±0.40 |
The strips with thickness of 0.25mm or less will be as per the agreement between the buyer and seller. | 