日金工压合钢板
☆☆日本金工系列钢板规格表
1.化学成份（Chemical Composition-Actual Value)(按重量百分比%）
钢种 | C | Ni | Cr | Other |
NTK 630 | ≤0.07 | 3.0～5.0 | 15.0～17.5 | Cu 3.0～5.0 |
NTK S-4 | ≤0.25 | 1.0～2.0 | 16.0～18.0 | Mn 14.0～16.0 |
NTK 301 | ≤0.15 | 6.0～8.0 | 16.0～18.0 |
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2.机械的性质（Mechanical Properties）
钢种 Material | 抗拉强度 Tensile Strength | 屈服强度 Yeild Strength | 延伸率 Elongation | 硬度 Hardness |
NTK 630SH | ≧1400 | ≧1370 | ≧2 | ≧500 |
NTK 630H | ≧1400 | ≧1370 | ≧2 | ≧450 |
NTK S-4 | ≧1280 | ≧980 | ≧5 | ≧400 |
NTK 301 H | ≧1300 | ≧1000 | ≧5 | ≧400 |
NTK 301 1/2H | ≧1050 | ≧750 | ≧10 | ≧330 |
3.各寸法许容差（Inspection Standard）
项目 | 标准式样 | ||||
板厚公差 Thickness Deviation | ±0.1mm以内 Within±0.1mm | ||||
板厚偏差 Thickness Deviation | 长 Plate's Length | ≦700mm | ≧701mm | ||
偏差 Deviation | 0.03mm以内 | 0.05mm以内 | |||
板厚测定数 Measuring points of Thickness | 长 Plate's Length | ≦700mm | 701～1295mm | ≧1296mm | |
测定数 Measuring points | 3点 3 points | 6点 6 points | 9点 9 points | ||
宽/长公差及对角线公差 Width & Length Tolerance and Squareness | 宽（长） Width(or length) | ≦700mm | ≧701mm | ||
宽、长允许公差 Width &Length Tolerance | +1/-0mm以内 Within +1/-0mm | +2/-0mm以内 Within+2/-0mm | |||
对角线 Squareness | 1mm以内 Within 1mm | 2mm以内 Within 2mm | |||
平坦度 Flatness | 长 Plate's Length | ﹤800mm | ≧800mm | ||
定盘间隙 Maximum gap from testing table | 3mm以内 Within 3mm | 5mm以内 Within 5mm | |||
角 Corners | R3～5程度 Approximately 3～5mm radius | ||||
4.物理性质（Physical properties）
钢种 Material | 热膨胀系数 Thermal Expansion Coefficient | 热传导率 Thermal Conductivity | |
0～200℃,×10-6/℃ | (0～100℃,J/g℃) | (200℃,J/g℃) | |
NTK 630SH | 11～12 | 18 | 23 |
NTK 630H | 11～12 | 18 | 23 |
NTK S-4 | 17～18 | 21 | 25 |
NTK 301 H | 15～16 | 17 | 21 |
NTK 301 1/2H | 16～17 | 17 | 21 |
铜 Cupper | 17 |
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