Forged steel round bar
Grade: SAE4340
Similar grade: 34CrNiMo6, 817M40, SNCM439
Chemical compostion:
C: 0.38/0.43; Si: 0.15-0.35; Mn: 0.60/0.80; P: Max 0.025; S: 0.020/0.035;
Cr: 0.70/0.90, Mo: 0.20/0.30; Ni: 1.65/2.00 Al: 0.02/0.05;
Standard: E ASTM A370
Grain Size: 6-8
Brinell Hardness: Quenched and tempered: 280HB-320HB
Delivery condition: Hot forged +Normalizing/Annealing+Rough Turned+ Quenching+ Tempering, .
Or Only forged of black surface bars.
Size: 90mm~800mm
Length: 4.0m and up(Or fix length according the customer requirement).
Inspecting: UTS according to SEP 1921 C/c, D/d, E/e, A388 or GB/T 6402
Cut both ends
Min. Qty.: 15MT per size.
Delivery: By both negotiation. (By bulk shippment or By Container)
Other Steel Grade:
Carbon Steel: SAE1020, SAE1045, SAE1050, SAE1060; SAE1018
Alloy Steel: SAE8620, SAE4130, SAE4340, SAE4140, SAE5140; SAE9840,
Tool Stee; : H13
Manufacturer: Jiangsu Zhuhong Forging Co., Ltd