Grade:SNCM439 Steel Ingot:EAF+LF+VD Delivery condition: Hot forged +Normalizing/Annealing+Rough Turned+ Quenching+ Tempering
Hot forged flat bars
Grade:SNCM439
Similar grade:SAE4340,34CrNiMo6,718M40
Steel Ingot:EAF+LF+VD
Chemical compostion:
C:0.36/0.43; Si:0.15-0.35; Mn:0.60/0.90;P:Max 0.025;S:0.020/0.035;
Cr:0.60/1.00,Mo:0.15/0.30;Ni:1.60/2.00; Al:0.02/0.05;
Standard: JIS
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: 150x150-650x650
Size tolerance:-0/+10mm;
Deviation : Max.2%, Corner " R" : 3-5mm, Max ( Aiming Shape Corner )Length: 4.0m and up(Or fix length according the customer requirement).Ultrasonic test: according to SEP 1921 C/c,D/d,E/e,A388 or GB/T 6402
Cut both ends
Other Steel Grade:
Carbon Steel:S20C,S26C,S35C,S45C,S50C,S55C,S60C;
Alloy Steel:SCM440,SCM420,SCM435,SCM415,SNCM220,SNCM439,SACM 645;
Tool Steel:SKD61.
Manufacturer:Jiangsu Zhuhong Forging Co.,Ltd.
SNCM439 Forged square bar
