- Model NO.: 4340
- Standard: AISI, ASTM, DIN, JIS, GB, BS
- Technique: Forged
- Special Use: Free Cutting Steel
- Grade: 4340
- Tolerance: -0/+5mm
- Place of Origin: Wuxi,China
- Brand Name: Jiangsuzhuhong
- Specification: SGS, ISO, CE
- HS Code: 7228400000
- Type: Alloy Steel Bar
- Composition: Stainless Steel Scrap
- Surface Treatment: Black Surface
- Application: Boiler Plate
- Ut Test: Sep1921-84 Class C/C, D/D
- Length: 3000mm-12000mm
- Market: Global
- Trademark: JIANGSU ZHUHONG
- Origin: Wuxi, China
| Material: | 4340Â forged steel round bar |
| Diameter: | 80mm-1200mm (optional) |
| Length: | 3000mm-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 G3 C/c |
| Marking: | Grade, heat NO. length will be stamped one each bar with required color |
| Payment: | 30% advance by T\T; Balance pay before the shipment against shipping documents or irrevocable LC at sight |
| similar steel grade | 40CRNIMOA/SAE4340/AISI4340/39CRNIMO/40NICRMO22 |
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