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| Nanjing Best Lion Special Steel Co.,Ltd | ||||||
| About this company : Nanjing Best Lion Special Steel Co., Ltd. is a sales subsidiary of Nanjing Iron And Steel Group Co., Ltd. Our company is a special steel company which specializes in producing steel forged pieces, electroslag ingots, forged round bars, and forged ingots. Our company, with more than 100 members of high and middle level technical staff members, owns strong technical force, advanced technology, and complete means of quality detection. Equipped with sophisticated analytical instruments, such as chemical analysis instruments, physical experiment instruments, metallographic testing instruments, US testing instruments, and high and low fold inspection instruments. Our products have attained ISO9001:2000 International Standard Quality Guarantee System Certification. We are mainly equipped with 25-ton arc furnaces, 25-ton LF furnaces, 30-ton VOD, three-phase ESR furnaces, automatically controlled hydraulic quick forging machines, hydraulic presses, fuel oil annealing furnaces, fuel gas annealing furnaces, resistance type furnaces, car-type heating furnaces, and large-scale machining equipment. With all raw materials for EAF crude refining, our product quality can be assured. Our main products include large specification round steel, including carbon steel, carbon tool steel, alloy framework steel, die steel, bearing steel, stainless steel, and cold and hot roll steel, totally more than 100 species. We own an annual output of 50,000 tons of steel ingots and more than 80,000 tons of forged pieces. Our products are not only used for large domestic locomotive, coal, petroleum machinery, plastic, transportation machinery, and shipbuilding industries, but also distributed to clients in Germany, Italy, France, Belgium, Russia, Turkey, Korea, Thailand, Singapore, Malaysia, and Taiwan area. | ||||||
| Contact : Corliss chan, sales | ||||||
| Headquarters : room a522 donghua metal material, trader center, Maiyao road, qixia, nanjing, 210000, China | ||||||
| Phone : 86 15951942047, Fax : 086 025 89607016 | ||||||
| Website : Log on to trade instantly , Email : Log on to trade instantly | ||||||
 | 42CrMo4 forged round steel bars round
hot rolled and forged AISI 4140 alloy round steel bars material:AISI 4140/42CrMo4/42CrMo/SCR440 size:20-250 *6000 mm/200-800mm *random length state of delivery:hot rolled /forged manufacturing process:LD+LF+CCM/EAF+LF+VD Norm:GB/T 3077-1999 origin:China Jiangsu province
Chemical component(%): C 0.40,Si 0.24,Mn 0.62,Cr 1.00,Ni 0.02,Mo 0.16,Cu 0.01,P 0.011 ,S 0.005,Al 0.007
Heat treatment: Temprature:860 degrees Celsius Time:50 min Medium:oil
Mechanical properties: Rel(N/MM2):1020 Rm(N/MM2):1100 A(%):17 Z(%):59 Aku2(J):64
Macro-structure(Grade): scattered porosity:0.0/0.0 central porosity:1.0/1.0 segregation:0.0/0.0
Application: AISI 4140 steel round bars with quenching and tempering used for manufacturing under medium load and mechanical parts,such as:axle,machine tools,shafts,gears,sleeves,mandrel,rings ,bolt etc | |||||
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