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发表于 2008-2-15 16:18:32
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来自： 中国安徽芜湖
化学成分和材料对照表A 576 1020 对应GB 20
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化学成分和材料对照表A 576 1020 对应GB 20 " D) | j1 B g! A, y. w' q' x
| | [table] | | 材料牌号: | A 576 1020 | | 标准： | ASTM | | 国家与地区： | USA | | 钢组： | 结构钢 | | 次级类别： | ASTM A 576 Hot-wrought special quality carbon steel bars | | 注释： | Bars shall be hot-wrought and shall normally be delivered as manufactured. |
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$ T: w: u2 N" s) B. a, q2 w化学成分 (%)7 J0 P7 t/ n4 U1 i }
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[table=98%] | | 元素 | 最小 | 最大 | 近似的 | | C | 0.1800 | 0.2300 |
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| | Mn | 0.3000 | 0.6000 |
! H% C" Z9 X& e( n4 n& O | | P | ) a2 Q( v ]2 V% v0 \
| 0.0400 |
/ B( D# w5 h o9 C | | S |
, V. H& p/ i5 @7 Z | 0.0500 | ' `9 S" _. H* y4 C2 V
| | B (*) |
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| | Cu (*) | 0.2000 | ; G' c! Z, p# C. n Z( Z) o( |9 K
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| | Pb (*) | " x2 n: |- C/ w- `
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& E, W- r2 p* D/ r; L6 P/ B/ e | | Other (*) |
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| 元素 | 注释 | | Si | Where silicon is required the following ranges and limits are commonly specified: Si=max 0.10%; Si=0.10-0.20%; Si=0.15-0.35%; Si=0.20-0.40%; | | B | When boron treatment is specified for killed steels than B=0.0005-0.003% | | Cu | When specified | | Pb | If required, the lead content can be specified Pb=0.15-0.35%. | | Other | The elements bismuth, calcium, and tellurium may be added as agreed upon between purchaser and supplier. |
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: s7 ?. Z8 J! l, l. P+ r! K1 B| 材料牌号: | 20 | | 标准： | GB | | 国家与地区： | China | | 钢组： | 结构钢 | | 次级类别： | GB 6479 Seamless steel tubes for high-pressure for chemical fertilizer equipments |
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化学成分 (%)8 l% ?% L+ P! V/ r6 c
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( ]2 P. D( [4 || 元素 | 最小 | 最大 | 近似的 | | C (*) | 0.1700 | 0.2400 | , a: X; Q7 D% D. U
| | Si | 0.1700 | 0.3700 | 1 W8 S3 k7 j3 q
| | Mn | 0.3500 | 0.6500 | " u; i& x. T3 y2 K, N' w* n
| | P |
1 ^7 D: v: U/ M7 @& j | 0.0300 | 3 `7 Y4 X- M( \* X6 N& Q1 m
| | S | ) N% v7 |1 ?. A
| 0.0300 | 3 B+ Y Q- Z# y8 Z, g8 r
| | Cr |
4 `. J+ V; E- Y8 x' c# b% T | 0.2500 | 1 b; j0 {. n) l1 Y. ?
| | Mo | : r [5 ` N, z3 }& F+ W
| 0.1500 |
! F- O5 o/ V8 a/ {* O4 p | | Ni | : H4 I# A! r; t2 z2 y
| 0.2500 |
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: U( |7 a, z) r z: ?( G8 M | 0.0800 |
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| 0.2000 | " ^! {( [3 ?: b1 p# M3 t$ A, r
| | N (*) |
6 L% k" v1 [- h) m$ b& x | 0.0080 |
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| 元素 | 注释 | | C | When requested by the purchaser and specified in the contract, for steel used at low temperature, carbon content may be 0.17-0.22% | | N | For steels smelted in the basic oxygen furnace. |
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