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Updated 2014-07-25 12:03
 

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?????????????????????????????????????????????????????????????????????????????????????www.lygt.com.cn www.ly6000.com lygt6000.1688.com www.lianyigangtie.cn ???????????????????????????????????????????20#?35#?45#????20Cr?40Cr????20CrMnTi????65Mn,60Si2Mn????2Cr13?3Cr13?4Cr13????1214?1215???? T8?T10????????Q345? 2Cr13?3Cr13?4Cr13??????A3?Q235?????? 20CrMo?20CrNiMo?35CrMo?42CrMo?38CrMoAl?40CrNiMo??????718?Cr12?P20???? GCr15?SUJ2???? 20#?45#?20Cr?GCr15? Q345?????? 45??? 45????GB?????JIS????S45C,ASTM???1045,080M46,DIN???C45 ?????45?????????????????????????1.0~4.0mm??? ???? ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????160HBS??????????????????????????????????????????????????????12~17mm???????????????80mm???????????????????????????????????????????????????????????????????????????????? ????? 1495???????0.42~0.50%? ?????????GB????45???JIS????S45C/S48C???DIN??????1.0503???DIN????C45???BS????IC45/080A47???AFNOR????CC45???NF????C45????UNI????C45????NBN????C45-1???SS????1650????????F.114???AISI/SAE????1045????????ISO????C45E4? ?????? ????? Fe???????????????? C?0.42~0.50% Si?0.17~0.37% Mn?0.50~0.80% P? ?0.040% S? ?0.045% Cr??0.25% Ni??0.25% Cu??0.25% ??7.85g/cm3?????210GPa????0.269? ?????? ??? ??????????850???840???600? 45????????????????????????????? ???????????????? 1. 45????????????????HRC55?????HRC62)???? ??????????HRC55?????HRC58)? 2.45????????????????? ???? ???????????????????????????+????????????0.8??1.2%??????0.1??0.25%????????0.35%???????????????????(HRC58??62)??????????? ???45????????????????????????????????????????????????0.30%????????????????????0.35%????????????????????????+??????????????????? ?????? ?????????????740~760??????4~6h??50~100?/h???????????600?????????????197HBS???????156HBS? ?????????850-870???????170-217HBS? ???????????84010???????????60010??????? ??????? GB/T699-1999?????45?????????850????840????600???????????????355MPa GB/T699-1999????45??????600MPa??????355MPa?????16%???????40%?????39J? ?45?????? 45??????HRC20~HRC30??? 45??????HRC55~58??,?????HRC62? 45?????15-20?????,??????????,?????????? ??????????HRC55?????HRC58?? 45???????????????????????????????????????????? ? 1. 45???????????????HRC55?????HRC62????? ??????????HRC55?????HRC58?? 2. 45???????????????? ?????????????????????????????????????????????????????????????????????????????+????????????? ??????????? www.lygt.com.cn www.ly6000.com lygt6000.1688.com www.lianyigangtie.cn ???0757-23320000 0757-23817933 13825519186 ??????????????????????B?41?
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