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海峽金屬材料公司長期直銷各國進口彈簧鋼，牌號齊全，質量保證，高強度彈簧鋼絲，60Si2Mn彈簧鋼圓棒，彈簧鋼廠家，進口彈簧鋼，進口彈鋼帶,進口彈簧鋼絲.進口彈簧鋼板，進口彈簧鋼圓棒，彈簧鋼帶，彈簧鋼板，彈簧鋼圓棒，彈簧鋼絲.直銷代理美國芬可樂彈簧鋼，德國撒斯特彈簧鋼，日本住友彈簧鋼，英國進口彈簧鋼，臺灣中鋼彈簧鋼，中國彈簧鋼牌號等海峽公司供應相應牌號如下：

中國彈簧鋼：65 70 85 65Mn 70Mn 55Si2Mn 55SI2MnB 55si2mnVB 60Si2Mn 60Si2MnA60si2CrA 60Si2CrVA 60CrMnBA. 60CrMnA 50CrVA  55CrSiA  55CrMnA  60CrMnOA  30W4Cr2VA 70Si2CrA

臺灣中鋼彈簧鋼：SK3 SK4 SK5 SK7 SKS51 S55C S65C SK85 T8A T12A  T10A

美國芬可樂彈簧鋼：1065 1070 1084 1566 1572 4151 5155 5160 6150 9255  9260  51B60H

德國撒斯特彈簧鋼：C67E CK67 C75E CK75 C85E CK85 C101E CK101 38Si6 38Si7 46Si7. 51Si7 55Si7 56Si7 65Si7 71Si7 60SiMn 51MnV7 54SiCr6 60SiCr7 67SiCr7 55Cr3  50CrV4 58CrV4 51CrMO4 45CrMOV6-7 52MnCrB3.

日本住友彈簧鋼：SUP3 SUP6 SUP7 SUP9 SUP9A SUP10 SUP11A SUP12 SUP13 S50C-CSP S55C-CSP S60C-CSP S65C-CSP S70C-CSP SK5-CSP SUP10-CSP .

東莞市海峽金屬材料有限公司

Dongguan City Straits metallic material limited company

全國統一銷售熱線：400-669-1516

公司傳真：0769-85375005

配貨查詢：0769-85386006

加工中心：0769-85387007

敬請關注海峽公司高強度彈簧鋼絲，60Si2Mn彈簧鋼圓棒，彈簧鋼廠家最近到港及報價,詳細請登陸海峽現貨網查詢:www.sk5sk7.com.

55SiMnVB--特性：強度、韌及塑性及淬透性均比60Si2MnA鋼高，油中臨界淬透直徑約為50~107mm；熱加工性能良好，熱處理時表面脫碳傾向小，回火穩定性好。用途：適用于制造中型截面尺寸的板彈簧和螺旋形彈簧，可代替60SiMnA鋼使用。
                                                                     

Equilibrium precipitated phases in switch K2 spring steel in the temperature range of 400 to 1600℃ and the solubilities of Nb and V in austenite were calculated by using the thermodynamic software Thermo-Calc to investigate the effect of alloying element content on the equilibrium precipitated phases.Then,the effect of Nb content on the precipitated phases was analyzed by carbon extraction replica and transmission electron microscopy（TEM）.It is shown that the main equilibrium precipitated phases in switch K2 spring steel are MX,M7C3,M3C2 and AlN,and the stability of MX phase can be significantly improved by adding Nb.TEM results reveal that the precipitated phases are spherical or disc-shaped,and their sizes range from several nanometers to more than 100nm.With the content of Nb increasing,the proportion of fine particles which precipitated from low-temperature phase ferrite increases dramatically,and the proportion of undissolved carbonitride also increases,overall the average particles size is refined.The large precipitates are Nb-rich carbides,while the small ones are V-rich carbides,which is in accordance with the results of thermodynamic calculations.