合結鋼
合金結構鋼 又稱合結鋼,是在碳素結構基礎上,加入5以下(xià)的(de)一種或幾種元素。鋼中加入合金元素,首先是提高(gāo)了(le)鋼的(de)淬透性,保證鋼經過熱(rè)處理(lǐ)後獲得(de)良好的(de)綜合機械性能,具有高(gāo)的(de)
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鉻錳钼圓鋼
②鋼中的(de)釩V、钛Ti、鋁AL、硼B、稀土RE等合金元素,均屬微合金元素,雖然含量很低,仍應在鋼号中标出。例如20MnVB鋼中。釩爲0.07-0.12%,硼爲0.001-0.005%。
③高(gāo)級優質鋼應在鋼号後加“A”,如12CrNi3A,特級優質鋼加後綴“E”,如12CrNi3E,以區(qū)别于一般優質鋼。
④專門用(yòng)途的(de)合金結構鋼,鋼号冠以(或後綴)代表該鋼種用(yòng)途的(de)符号。例如冷(lěng)镦和(hé)冷(lěng)頂鍛用(yòng)鋼(俗稱“鉚螺鋼”)在牌号頭部加前綴“ML,,(“鉚”、“螺’’兩字漢語拼音(yīn)字母的(de)第一個(gè)字母組合)。保證淬透性用(yòng)鋼在牌号尾部加後綴“H”(“淬透性”的(de)英文字“Hardenability”的(de)第一個(gè)字母,與國際上常用(yòng)的(de)符号一緻)。焊接用(yòng)鋼在牌号頭部加前綴ttH,,(“焊,,字漢語拼音(yīn)字母的(de)第一個(gè)字母)。非調質鋼和(hé)易切削非調質鋼在牌号頭部加前綴“F’’或“YF”(“非”字或“易非”字漢語拼音(yīn)字母的(de)第一個(gè)字母或組合)。
中外牌号對(duì)照(zhào)表 |
項目 |
中國 |
日本 |
德國 |
美(měi)國 |
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GB,YB |
JIS |
DIN(W-Nr.) |
ASTM |
AISI |
SAE |
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09Mn2 |
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(1) |
10Mn2 |
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1513 |
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1513 |
15Mn2 |
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20Mn2 |
SMn420 |
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1024 |
1024 |
1524 |
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30Mn2 |
SMn433(SMn1) |
28Mn6 (1.5065) |
1330 |
1330 |
1330 |
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35Mn2 |
SMn438(SMn2) |
36Mn5 (1.5067) |
1335 |
1335 |
1335 |
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40Mn2 |
Smn443 (SMn3) |
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1340 |
1340 |
1340 |
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45Mn2 |
Smn443 (SMn3) |
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1345 |
1345 |
1345 |
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50Mn2 |
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1052 |
1052 |
1552(-1052) |
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(2) |
27SiMn |
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35SiMn |
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37MnSi5 (1.5122) |
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42SiMn |
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46MnSi4 (1.5121) |
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15MnV |
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15MnV5 (1.5213) |
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(3) |
42Mn2V |
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42MnVT (1.5223) |
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(4)鉻鋼組 |
15Cr |
SCr41(SCr21) |
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5115 |
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5115 |
20Cr |
SCr240(SCr22) |
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5120 |
5120 |
5120 |
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30Cr |
SCr430(SCr2 ) |
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51,305,132 |
51,305,132 |
51,305,132 |
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35Cr |
SCr435(SCr3 ) |
34Cr4 (1.7033) |
5135 |
5135 |
5135 |
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40Cr |
SCr440(SCr4) |
41Cr4 (1.7035) |
5140 |
5140 |
5140 |
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45Cr |
SCr445(SCr5) |
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51,475,145 |
51,475,145 |
51,475,145 |
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50Cr |
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5150 |
5150 |
5150 |
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(5) |
38CrSi |
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40CrSi |
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(6) |
38CrMn |
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15CrMn |
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20MnCr4 (1.7147) |
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40CrMn |
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20CrMnSi |
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(7) |
25CrMnSi |
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30CrMnSi |
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35CrMnSi |
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(8) |
20CrV |
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22CrV4 (1.7513) |
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40CrV |
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42CrV6 (1.7561) |
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50CrV |
SUF10 |
50CrV4 (1.8159) |
6150 |
6150 |
6150 |
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(9) |
30CrMnTi |
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(10) |
16Mo |
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15Mo3N (1.5415) |
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(11) |
12CrMo |
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13CrMo44 (1.7335) |
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15CrMo |
SCM415 (SCM21) |
16CrMo44 (1.7337) |
A387Cr |
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20CrMo |
SCM420 (SCM22) |
25CrMo4 |
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30CrMo |
SCM430 (SCM2) |
34CrMo4 (1.7220) |
4130 |
4130 |
4130 |
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35CrMo |
SCM435 (SCM3) |
34CrMo4 (1.7220) |
4135 |
4135 |
4135 |
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42CrMo |
SCM440 (SCM4) |
42CrMo4 (1.7225) |
4140 |
4140 |
4140 |
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SCM421 (SCM23) |
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SCM418 |
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4118 |
4118 |
4118 |
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SCM445 (SCM5) |
50CrMo4 (1.7228) |
4145 |
4145 |
4145 |
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SCM822 (SCM24) |
25CrMo4(1.7218) |
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38CrMoAl |
SACM645 (SACM1) |
34CrAlMo5(1.8507) |
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(12) |
15CrMnMo |
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15CrMo5 (1.7262) |
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20CrMnMo |
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20CrMo5 (1.7264) |
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40CrMnMo |
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4140 |
4140 |
4140 |
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(13) |
12CrMoV |
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24CrMoV55 |
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12Cr1MoV |
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24CrMoV |
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35CrMoV |
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12CrNi2 |
SNC415 (SNC21) |
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(14) 鉻钼鋼組 |
12CrNi3A |
SNC815 |
14NiCr10 |
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-3415 |
(SNC22) |
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12Cr2Ni4A |
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(E3310), |
(3310), |
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(E3316) |
3316 |
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20CrNi |
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-3120 |
-3120 |
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20CrNi3A |
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20Cr2Ni4A |
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-3325 |
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30CrNi3A |
SNC631 (SNC2) |
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-3435 |
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37CrNi3A |
SNC836 (SNC3) |
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-3335 |
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40CrNi |
SNC236 (SNC1) |
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-3140 |
-3140 |
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45CrNi |
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(A3145) |
-3145 |
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(15) |
40CrNiMoA |
SNCM439 (SNCM8) |
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4340 |
4340, -4337 |
43,404,337 |
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SNCM220 (SNCM21) |
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8620 |
8620 |
8620 |
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SNCM240 (SNCM6) |
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8640 |
8640 |
8640 |
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SNCM415 (SNCM22) |
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4315 |
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SNCM420 (SNCM23) |
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4320 |
4320 |
4320 |
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SNCM431 (SNCM1) |
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-4337 |
-4337 |
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SNCM447 (SNCM9) |
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4347 |
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SNCM625 (SNCM2) |
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SNCM815 (SNCM25) |
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(16) |
40B |
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TS14B35 |
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40B |
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50B36H |
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40MnB |
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TS14B35H |
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40MnB |
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TS14B50H |
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