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| Categories | Forged Steel Bar |
|---|---|
| Brand Name: | UST |
| Model Number: | Dia: 80-1200mm |
| Certification: | ISO 9001 |
| Place of Origin: | China |
| MOQ: | MOQ: 5-10 ton |
| Price: | USD 800- 1200/ton |
| Supply Ability: | 1500 ton/month |
| Delivery Time: | Within 10-45 days |
| Packaging Details: | Plastic plugs in both ends, Hexagonal bundles of max 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips. |
| Usage: | mechanical |
| Quality Standard: | ASTM A29 |
| Surface condition: | Black or bright |
| Heat treatment: | Annealed/Normalized/Q+T |
| Inspection: | the third party is acceptable |
| Length: | as customers requirements |
| Certificate: | ISO9001-2008 |
| Company Info. |
| SHANGHAI UNITE STEEL |
| View Contact Details |
| Product List |
SAE4340 Forged alloy steel, Forged steel bar, DIA 80-1200mm
Application
Components for the aircraft, automotive and general engineering
industries eg. Propeller shafts, connecting rods, gear shafts, and
other automobile parts. Heavy forgings, eg. Rotors, shafts, discs.
Equivalent Grades:
| SAE | 4340 | JIS | SNCM439 |
| Greman W.Stoff No. | 1.6582 | GB | 40CrNiMoA |
| BS | 816M40 | EN | 24 |
Chemical composition:
| C | Si | Mn | P | S | Cr | Ni | Mo |
0.38-0.43 | 0.15-0.35 | 0.60-0.80 | 0.035 max | 0.040 max | 0.7-0.9 | 1.65-2.0 | 0.2-0.3 |
Mechanical Properties:
| Tensile strength | Yield strength | Elongation rate | Contractibility rate | Impact Energy | Hardness (HBS100/3000) |
| ≥980MPa | ≥835MPa | ≥12% | ≥55% | ≥78J | ≤269 |
SPECIFICATION OF ALLOY STEEL AISI4340 ROUND BARS:
| Diameter: | 80mm-1200mm (optional) |
| Length: | 1000mm-12000mm Straightness: 3mm/M max(optional) |
| Process: | Forged from vacuum degassed ingots. |
| Delivery condition: | Hot forged Rough machined (black surface after Q/T) Turned (optional) |
| Delivery Time: | 10-40 days |
| Heat treatment: | Normalized / Annealed / Quenched / tempered (optional) |
| Technical Data: | According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing |
| 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 |

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