40NiCrMo7 Forged & Turned Steel Round Bar
Type:Round bar
Delivery condition: Annealed black surface/Turned bright surface/Q+T
Products Description
40NiCrMo7 Forged steel bar has high strength, toughness, excellent hardenability and stability against overheating, but high white spot sensitivity and temper brittleness. Poor weldability, high temperature preheating is required before welding, stress relief is required after welding, and it can be used after tempering.
40NiCrMo7 Alloy Steel Properties
Elongation δ 5 (%)：≥12
Reduction of area ψ (%)：≥55
Impact energy Akv (J): ≥ 78
Impact toughness value α kv (J/cm2)：≥98(10)
Sample size: sample blank size 25mm
Products parameters
|
Equivalent
Steel Grade
|
AISI | NF | JIS | DIN | BS |
| 4340 | 40NCD3 | SNCM439 | 1.6511 | 816M40 |
40NiCrMo7 Chemical Composition
| C | 0.38-0.43% | Cr | 0.70-0.90% |
| Si | 0.15-0.35% | Mo | 0.20-0.30% |
| Mn | 0.60-0.80% | Ni | 1.65-2.00% |
| P | ≤0.025% | S | ≤0.025% |
Q+T Properties
| Tensile Strength | σb (MPa):≥900(100) |
| Yield Strength | σs (MPa):≥835(85) |
| Elongation | δ5 (%):≥12 |
| Reduction | ψ (%):≥55 |
| Impact Energy | Akv (J):≥78 |
| Impact Toughness | αkv (J/cm2):≥98(10) |
| Annealed Hardness | ≤269HB |
Product Picture
Our factory
Steel Making
Ingot Production
Forged Bars
Machinary
40NiCrMo7 Alloy Steel Heat Treatment
Quenching 850 ℃;
Coolant: Oil
Tempering temperature 600 ℃
Brinell hardness HBW of steel in annealing or high-temperature tempering supply state is less than or equal to 269
Packing & Delivery
Packing & Delivery
-
The inner size of container is below:
-- 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high)
Our Service
1. Competitive price and quality from our own factory .
2. Best service with 24 hour`s reply .
3. Flexible payment with T/T,L/C , etc .
4. Smooth production ability(1000tons/month).
5. Quick delivery and standard exporting package.
Etichetta sexy: 40nicrmo7 forged & turned steel round bar
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