弹簧钢带允许偏差
| 钢带厚度允许偏差 |
| 单位：毫米 |
| 厚 度 | 厚度允许偏差 | | 10～150 | ＞150～300 | ＞300～≤450 | | 0.03～0.10 | ±0.005 | ±0.005 | ±0.010 | | ＞0.10～0.15 | ±0.010 | ±0.010 | ±0.010 | | ＞0.15～0.25 | +0.010
-0.015 | +0.010
-0.015 | +0.010
-0.015 | | ＞0.25～0.45 | ±0.015 | ±0.015 | ±0.015 | | ＞0.45～0.65 | ±0.020 | ±0.020 | ±0.020 | | ＞0.65～0.90 | +0.025
-0.030 | +0.025
-0.030 | ±0.030 | | ＞0.90～1.20 | +0.030
-0.035 | ±0.035 | ±0.040 | | ＞1.20～1.50 | +0.040
-0.045 | +0.040
-0.045 | ±0.050 | |
| 切边钢带宽度**精度（K）允许偏差 |
| 单位：毫米 |
| | 宽度允许偏差 | | 5～150 | ＞150～300 | ＞300～≤450 | | 0.03～0.15 | ±0.10 | ±0.10 | ±0.20 | | ＞0.15～0.50 | ±0.15 | ±0.15 | ±0.20 | | ＞0.50～1.00 | ±0.20 | ±0.20 | ±0.25 | | ＞1.00～1.50 | ±0.20 | ±0.25 | ±0.25 | |
| 301、304硬度范围划分及机械性能 |
| 牌号 | 硬度代号 | 屈服强度
δ0.2N/mm2
不小于 | 抗拉强度
δbN/mm2
不小于 | 延伸率
A％
不小于 | 硬度
HV | | 301 | ANN | 205 | 520 | 40 | ≤200 | | 1/2H | 510 | 930 | 9 | 310-370 | | 3/4H | 745 | 1030 | 3 | ＞370-430 | | FH | 1030 | 1320 | 3 | ＞430-490 | | EH | 1275 | 1570 | cc | ＞490-530 | | 304 | ANN | 205 | 520 | 40 | ≤200 | | 1/2H | 470 | 780 | 6 | 250-310 | | 3/4H | 665 | 930 | 3 | ＞310-370 | | FH | 880 | 1130 | cc | ＞370-420 | |