ASTM SAE 1015 Forged Steel Bars Structural Use 4140 Alloy Steel Round Bar China Manufacture
Our main products include Forged Steel Round Bar from Sizes 85mm to 1100mm, Forged Steel Square Bar from Sizes 150×150 to 800×800mm with various grade
ASTM 4140 Steels And Equilvalents Chemical Composition
| Standard | Grade | C | Si | Mn | P | S | Cr | Mo |
| ASTM A29 | 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤ 0.035 | ≤ 0.04 | 0.8-1.1 | 0.15-0.25 |
| 42CrMo4 | 0.38-0.45 | ≤ 0.4 | 0.6-0.90 | ≤ 0.025 | ≤ 0.035 | 0.9-1.2 | 0.15-0.30 | |
| EN10083 | 1.7225 | |||||||
| JIS G4105 | SCM440 | 0.38-0.43 | 0.15-0.35 | 0.6-0.85 | ≤ 0.035 | ≤ 0.04 | 0.9-1.2 | 0.15-0.30 |
| GB 3077 | 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.5-0.80 | ≤ 0.035 | ≤ 0.035 | 0.9-1.2 | 0.15-0.25 |
| BS 970 | EN19 | 0.35-0.45 | 0.15-0.35 | 0.5-0.80 | ≤ 0.035 | ≤ 0.035 | 0.9-1.5 | 0.2-0.40 |
4140 Forged Round Bar Mechanical Property :
(For refference only, property can be changed by adjusting quenching and tempereing tempreture)
| Grade | Tensile strength σb(MPa) |
Yield strength σs (MPa) |
Elongation δ5 (%) |
Reduction ψ (%) |
Impact Value Akv (J) |
Hardness |
| 4140 | ≥1080 | ≥930 | ≥12 | ≥45 | ≥63 | 28-32HRC |
Forged Steel Size we can supply:
| Forged Steel Round Bar | Φ85mm~1200mm |
| Forged Square steel Bar: | 150×150-800×800mm |
| Forged Flat Blocks: | (150mm-800mm)*(200mm-800mm) |
| Forged Shaft and Forged Ring | According to Customer's drawing |
Delivery Condition:
Forged+black surface
Forged+rough machined
Forged+rough turned+QT/annealed/normalized
Surface condition: Black; Peeled; Polished; Machined; Grinded; Turned; Milled
Manufacture: EAF+LF+VD(Annealed,normalized,Quenched+Tempered,peeled,rough turned).
Heat Treatment: Normalized / Annealed / Quenched / tempered (optional)
FAQ
Q1: What is your terms of payment?
A: 30% T/T in advance, the balance 70% before delivery. We will show you the photos of products and package before you pay the balance.
Q2: what is the terms of delivery?
A: EXW, FOB, CIF, CFR, DDU
Q3: What is the terms of packing?
A: generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers' requirement.
Q4: What is your delivery time?
A: For stocks, we could transport the goods to loading port within 7 days after we received your deposit.
For production period, it usually takes about 15 days-30 days after receiving the deposit.
Q5: Could you produce according to the samples?
A : Yes, we could customer-made by your samples or technique drawings, we could build the mold and fixtures.
Q6: Could you provide the samples?
A: yes, we could provide the free samples on conditons it is available in stocks, however, the the transportation fee is borne by buyer.
