不銹鋼300系
300系不銹鋼是一種用途非常廣泛的 不銹鋼材料，常用于家庭用品(如餐 具、廚具、室內(nèi)管線、醫(yī)療器具，建 材，化學(xué)，食品工業(yè)，農(nóng)業(yè)，船舶部 件等行業(yè)領(lǐng)域。
化學(xué)成分及機(jī)械性能
| 等級(jí) | 化學(xué)成分 | 機(jī)械性能 | |||||||||||
| C | Si | Mn | P | S | Ni | Cr | N | CY | Y.S | T.S | ELOG | HRB | |
| % | % | % | % | % | % | % | % | N/mm2 | N/mm2 | % | |||
| 304 | ≤0.08 | ≤0.75 | ≤2 | ≤0.045 | ≤0.030 | 8~10 | 18~20 | ≥205 | ≥520 | ≥40 | ≤90 | ||
| 301 | ≤0.15 | ≤1.00 | ≤2 | ≤0.045 | ≤0.030 | 6~8 | 16~18 | ≥205 | ≥515 | ≥40 | ≤95 | ||
| 316 | ≤0.08 | ≤1.00 | ≤2 | ≤0.045 | ≤0.030 | 11~14 | 16~18 | 2~3 | ≥205 | ≥515 | ≥40 | ≤90 | |
| 316L | ≤0.03 | ≤1.00 | ≤2 | ≤0.045 | ≤0.030 | 12~15 | 16~18 | 2~3 | ≥170 | ≥480 | ≥40 | ≤95 | |
| The specification of type 301，304,316,316L according with ASTM and JIS Standard | |||||||||||||
厚度公差
鋼帶厚度允許偏差（GB/T3280-2007) | ||||
公稱厚度 | 厚度允許偏差 單位：mm | |||
寬度＜125 | 125≤寬度＜250 | 250≤寬度＜600 | 600≤寬度＜780 | |
≥0.05~＜0.10 | ±0.006 | ±0.001 | ±0.001 | - |
≥0.01~＜0.20 | ±0.008 | ±0.012 | ±0.015 | ±0.015 |
≥0.20~＜0.30 | ±0.012 | ±0.015 | ±0.015 | ±0.020 |
≥0.30~＜0.40 | ±0.015 | ±0.020 | ±0.020 | ±0.025 |
≥0.40~＜0.60 | ±0.020 | ±0.025 | ±0.030 | ±0.025 |
≥0.60~＜1.00 | ±0.025 | ±0.030 | ±0.035 | ±0.035 |
備注：t為公稱厚度 | ||||
分條公差
分條公差 單位：mm | ||||||||
寬度/厚度 | ＜0.59 | 0.6~0.8 | 0.8~1.0 | 1.0~1.25 | 1.25~1.6 | 1.6~2.0 | 2.0~2.5 | 2.5~3.15 |
＜250 | ±0.04 | ±0.045 | ±0.05 | ±0.05 | ±0.06 | ±0.07 | ±0.08 | ±0.09 |
251~400 | ±0.04 | ±0.045 | ±0.05 | ±0.05 | ±0.06 | ±0.08 | ±0.08 | ±0.09 |
401~630 | ±0.04 | ±0.045 | ±0.05 | ±0.06 | ±0.06 | ±0.08 | ±0.09 | ±0.10 |
631~1000 | ±0.04 | ±0.05 | ±0.05 | ±0.06 | ±0.07 | ±0.09 | ±0.10 | ±0.11 |
1001~1250 | ±0.05 | ±0.05 | ±0.06 | ±0.07 | ±0.08 | ±0.10 | ±0.11 | ±0.12 |
1251~1524 | ±0.08 | ±0.09 | ±0.10 | ±0.12 | ±0.15 | ±0.17 | ±0.2 | ±0.25 |
切片公差
切片公差 | ||
長(zhǎng)度 | 長(zhǎng)度公差 | 對(duì)角線公差 |
400~999 | ±0.3 | ≤0.5 |
1000~2438 | ±0.5 | ≤1.0 |
2349~3658 | ±0.8 | ≤1.0 |
3659~6000 | ±1.0 | ≤2.0 |
表面粗糙度
表面粗糙度加工等級(jí) | ||
表面加工代號(hào) | 表面粗糙度Ra | 加工方法 |
BA |
| 鋼帶冷軋后經(jīng)過(guò)光亮熱處理的表面 |
TR |
| 鋼帶冷軋后經(jīng)過(guò)清洗的表面 |
HL |
| 用適當(dāng)研磨粒度研磨出連續(xù)線條的軋輥軋制使鋼帶表面呈一定的縱向磨紋 |
S |
| 適用砂粒加工的軋輥軋制的鋼帶表面 |
80# | 0.8~1.0 | 用80#粒度研磨的軋輥軋制的表面 |
100# | 0.6~0.8 | 用100#粒度研磨的軋輥軋制的表面 |
150# | 0.4~0.6 | 用150#粒度研磨的軋輥軋制的表面 |
180# | 0.3~0.4 | 用180#粒度研磨的軋輥軋制的表面 |
220# | 0.15~0.3 | 用220#粒度研磨的軋輥軋制的表面 |
320# | 0.08~0.15 | 用320#粒度研磨的軋輥軋制的表面 |
