長期供應Cr含量在1.0左右的蘇州20Cr圓鋼與蘇州40Cr圓鋼，國標材質、性能穩定，并可加工20Cr與40Cr冷拉光圓/光亮圓鋼/扁鋼/方鋼/六角鋼等，只需一個電話滿足客戶所需。經銷碳結圓鋼、合結圓鋼、合金圓鋼、齒輪鋼、軸承鋼、彈簧鋼等。材質有： 20Cr、35Cr、40Cr、20CrMo、30CrMo、35CrMo、42CrMo、20CrMnTi、GCr15等。

公司主要銷售：20#、35#、45#、20CrMnTi齒輪鋼、20CrMo、35CrMo、42CrMo、40Cr等圓鋼、彈簧鋼、軸承鋼、齒輪鋼。現已是國內**大型模具開發公司、軍工企業、機械加工廠和汽車制造業的供應商。多年來，本著“誠信經營、品質至上”和“厚德載物、共創雙贏”的經營信條；公司經銷東北特鋼、包鋼、西寧特鋼、大冶特鋼等鋼廠材料。  

20Cr與40Cr性能對比：

20Cr較高的強度及淬透性，在油中臨界淬透直徑達4 ～22mm，在水中臨界淬透直徑達11～40mm，但韌性較差，此鋼滲碳時仍有晶粒長大傾向，降溫直接淬火對沖擊韌性影響較大，所以滲碳后需二次淬火以提高零件心部韌性，無回火脆性；鋼的冷應變塑性高，可在冷狀態下拉絲；可切削性在高溫正火或調質狀態下良好，但退火后較差；20Cr為珠光體，焊接性較好，焊后一般不需熱處理，但厚度大于15mm的零件在焊前需預熱到100～150℃，焊后也可不進行回火熱處理。40Cr圓鋼經調質后用于制造承受中等負荷及中等速度工作的機械零件，如汽車的轉向節、后半軸以及機床上的齒輪、軸、蝸桿、花鍵軸、**套等；經淬火及中溫回火后用于制造承受高負荷、沖擊及中等速度工作的零件，如齒輪、主軸、油泵轉子、滑塊、套環等；經淬火及低溫回火后用于制造承受重負荷、低沖擊及具有耐磨性、截面上實體厚度在25mm以下的零件，如蝸桿、主軸、軸、套環等；經調質并高頻表面淬火后用于制造具有高的表面硬度及耐磨性而無很大沖擊的零件，如齒輪、套筒、軸、主軸、曲軸、心軸、銷子、連桿、 螺釘、螺帽、進氣閥等。此外，這種鋼又適于制造進行碳氮共滲處理的各種傳動零件，如直徑較大和低溫韌性好的齒輪和軸。 

蘇州20CrMo/30CrMo/35CrMo/42CrMo圓鋼、南通、連云港、淮安、鹽城、揚州、鎮江、泰州、宿遷、江陰、六安、亳州、池州、宣城、金壇、溧陽、常熟、張家港、武進、句容、建湖、泰興、姜堰、靖江、興化、太倉、昆山、吳江、如皋、海門、啟東、東臺、海安、高郵、儀征、丹陽、揚中、杭州、寧波、溫州、嘉興、湖州、紹興、金華、衢州、舟山、臺州、麗水、合肥、蕪湖、蚌埠、淮南、馬鞍山、淮北、銅陵、安慶、黃山、滁州、阜陽、宿州、無錫、南京、徐州、宜興、常州20Cr/35Cr/40Cr圓鋼、High strength and quenched 20Cr permeability, the critical quenching oil through the diameter of 4 ~ 22mm, in the water critical hardenable diameter of 11 ~ 40mm, but the toughness is poor, the steel still has the tendency of grain growing, direct cooling quenching has great influence on the impact toughness, so after carburizing quenching to two times improve parts core toughness, no temper brittleness; cold steel strain high plasticity, can be brushed in a cold state; machinability in high temperature normalizing and tempering condition is good, but the poor 20Cr after annealing; pearlite, good weldability, general heat treatment after welding is not required, but the thickness of more than 15mm parts must be preheated to 100 ~ 150 degrees before welding, after welding with or without heat treatment. 40Cr steel quenched for the manufacture of mechanical parts under medium load and medium speed work, such as the car steering knuckle, half shaft and machine on the gear shaft, worm, spline shaft, etc. the top set; quenching and tempering after used in the manufacture of high load, impact and moderate speed working parts, such as gear, shaft, pump rotor, slider, ring etc.; after quenching and low temperature tempering for manufacturing under heavy load, low impact and abrasion resistance, the thickness of the parts with solid section below 25mm, such as worm, spindle, shaft, collar; quenched and high frequency quenching for manufacturing with surface the hardness and high wear resistance and no great impact on the parts, such as gear, shaft, sleeve, spindle, spindle, crankshaft, connecting rod, pin, screw, nut, valve etc.. In addition, this kind of steel is suitable for the manufacture of various kinds of transmission parts, such as the diameter of large diameter and low temperature toughness of good gear and shaft.

張家港20Cr圓鋼與張家港40Cr圓鋼特性對比

常熟20Cr圓鋼與吳江40Cr圓鋼價格對比

太倉20Cr圓鋼與昆山40Cr圓鋼用途對比

蘇州20Cr圓鋼與蘇州40Cr圓鋼特性對比