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Product Details:
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| OD: | 8-500mm | Length: | 1-12m |
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| Surface: | Black | Type: | Round |
| High Light: | forged steel round bar,carbon steel round bars |
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40CrNiMoA SNCM439 Alloy Steel Round Bar , Black Surface 6mm Steel Rod
Forged steel round bar
Grade: 40NiCrMoA
Similar grade: 40NiCrMo8, 817M40, 4340
Chemical compostion:
C: 0.37/0.44; Si: 0.15-0.35; Mn: 0.50/0.80; P: Max 0.025; S: Max 0.035
Cr: 0.60/0.90; Mo: 0.20/0.35; Ni: 1.60/1.90;
Standard: UNI 7845: 1978
Temperature: Hot forging 1100-900
Soft Annealing: HB Max 250
Delivery state: 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
Payment: L/C at sight or T/T
Min. Qty.: 15MT per size.
Delivery: By both negotiation. (By bulk shippment or By Container)
Delivery time: 60 days after L/C.
Other Steel Grade:
Carbon Steel: C45, CK45, C60,
Alloy Steel: ST52-3, ASTM A105, 42CrMo4, S355J2G3, 16MnCr5, 20MnCr5, 34CrNiMo6,
18CrNiMo7-6, 39CrNiMo3, 17CrNiMo6, 21CrMoV511, 56NiCrMoV7, S355J2,
41Cr4, 51CrV4, 41CrAlMo7, 40NiCrMo7,
Manufacturer: Jiangsu Zhuhong Forging Co., Ltd
| Material: | 40crnimoA/sae4340/aisi4340/817m40 |
| Diameter: | 80mm-1200mm (optional) |
| Length: | 1000mm-12000mm Straightness: 3mm/M max(optional) |
| Process: | EAF + LF + VD + Forged + Heat Treatment (optional) |
| Delivery condition: | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) |
| Delivery Time: | 30-45 days |
| MOQ: | 20 tons |
| Heat treatment: | Normalized / Annealed / Quenched / tempered |
| Technical Data: | According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing |
| Properties: | Yield=310 Mpa Minimum; Tensile=600 Mpa minimum; %EI=13min,Surface Hardness=BHN160-220(As your request) |
| Test: | Ultrasonic test according to SEP 1921-84 Class C/c and D/d (optional) |
| Marking: | Grade, heat NO. length will be stamped one each bar with required color |
| Payment: | 30% advance by TT; Balance pay before the shipment against shipping documents or irrevocable LC at sight |
| similar steel grade |
40CrNiMoA, AISI4340,39CrNiMO,40NiCRMo22,SNCM439 |
Contact Person: Mr. Gao Ben
Tel: +86-18068357371
Fax: 86-0510-88680060
