Forged steel round bar SAE4340

Specifications

Grade:SAE4340
Brinell Hardness: Quenched and tempered: 280HB-320HB
Size: 90mm~800mm
UTS according to SEP 1921 C/c,D/d,E/e

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.