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Raian IonescuMaterial quality very good. we have cooperate more than 10 Years. They trade lots kinds of steel material. All material quality good. They duty for all material quality. We are planing continue cooperate with them in the future
Polished Surface 4340 Alloy Steel Round Bar with High Tensile Strength for Mold Steel Applications
Product Details
| Model NO. | 4340 | Surface Treatment | Polished |
|---|---|---|---|
| Diameter Range | 6-630mm | Round Bar Diameter | 16-600mm |
| Plate Thickness | 16-200mm | Plate Width | 200-800mm |
| Length | 3000-6000mm | Carbon Content | 0.37-0.44% |
| Silicon Content | 0.17-0.37% | Manganese Content | 0.50-0.80% |
| Phosphorus Content | ≤0.025% | Sulfur Content | ≤0.025% |
| Chromium Content | 0.60-0.90% | Nickel Content | 1.25-1.65% |
| Molybdenum Content | 0.15-0.25% | ||
| Highlight | Polished Surface 4340 Alloy Steel Round Bar,High Tensile Strength 40CrNiMoA Steel Bar,Mold Steel Application 34CrNiMo6 Alloy Steel Rod |
||
Product Description
Forged Stainless Steel Round Bar Grade 4340 Alloy Steel Bar
High-quality 1.6582 4340 40CrNiMoA 34CrNiMo6 alloy steel rods designed for demanding industrial applications requiring superior strength and durability.
International Grade Equivalents
| GB | AISI | DIN | JIS | EN | TOCT | ISO |
|---|---|---|---|---|---|---|
| 40CrNiMoA | 4340 | 1.6582 | SNCM439 | 41NiCrMo 7-3-2 | 40XH2MA (40XHMA) | 36CrNiMo4 |
Product Specifications
| Type | Diameter/Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|
| Round Bar | 16-600 | / | 3000-6000 |
| Plate | 16-200 | 200-800 | 3000-6000 |
Custom specifications available upon request.
Chemical Composition
| Element | 40CrNiMo | 4340 |
|---|---|---|
| C | 0.37-0.44% | 0.38-0.43% |
| Si | 0.17-0.37% | 0.15-0.35% |
| Mn | 0.50-0.80% | 0.60-0.80% |
| P | ≤0.025% | ≤0.035% |
| S | ≤0.025% | ≤0.040% |
| Cr | 0.60-0.90% | 0.70-0.90% |
| Ni | 1.25-1.65% | 1.65-2.00% |
| Mo | 0.15-0.25% | 0.20-0.30% |
Key Features
- Chromium molybdenum alloy steel construction
- High strength and exceptional toughness
- Excellent hardenability stability and anti-overheating properties
- Superior high tensile strength with outstanding shock resistance
Typical Applications
- Heavy machinery and high-load shafts
- Rotor shafts and turbine blades
- Critical components requiring nitriding treatment for special performance requirements
Packaging Details
20ft Container: Gross Weight 27T (5.80m × 2.13m × 2.18m)
40ft Container: Gross Weight 27T (11.8m × 2.13m × 2.18m)
40ft Container: Gross Weight 27T (11.8m × 2.13m × 2.18m)
Delivery Timeline
Standard Products: 15-20 days (abundant stock available)
Customized Products: 30-50 days
Full equipment capability including sawing, grinding, and polishing machines for custom specifications.
Customized Products: 30-50 days
Full equipment capability including sawing, grinding, and polishing machines for custom specifications.
Additional Steel Products
| Standard/Grade | Flat Bar Size (mm) | Round Bar Size (mm) | Manufacturing Process |
|---|---|---|---|
| 1.121 / SAE1050 / S50C / 50# | 10-450 × 155-2200 × 2000-12000 | Forged, Hot Rolled | |
| 1.2311 / P20 / PDS-3 / 3Cr2Mo | 10-460 × 155-2200 × 2000-10000 | 20-200 × 2000-6000 | |
| 1.2738 / P20+Ni / - / 3Cr2NiMnMo | 21-300 × 155-2200 × 2000-8000 | 20-200 × 2000-6000 | |
| 1.2379 / D2 / SKD10 / SKD10 | 10-200 × 155-810 × 2000-6000 | 14-80 × 3000-6000 | |
| 1.2080 / D3 / SKD1 / 3Cr2Mo | 10-200 × 155-810 × 2000-6000 | 20-200 × 3000-6000 | |
| 1.2083 / 420 / - / 4Cr13 | 10-500 × 155-1200 × 2000-6000 | 12-300 × 3000-6000 | |
| 1.2344 / H13 / SKD61 / 4Cr5MoSiV1 | 10-500 × 155-1600 × 2000-6000 | 16-400 × 3000-6000 | |
| 1.2510 / O1 / SKS3 / 9CrWMn | 10-200 × 155-810 × 2000-6000 | 20-200 × 3000-6000 | |
| 1.7225 / SAE4140 / SCM440 / 42CrMo | 10-280 × 155-2200 × 2000-6000 | 16-450 × 3000-6000 |
About Our Company
Changfeng Tool & Die Steel is a professional special steel company specializing in this industry in China since 2005. Our comprehensive product range includes:
- Plastic Mould Steel
- Hot Work Mould Steel
- Cold Work Mould Steel
- Alloy Structural Steel
- Tool Steel
- Stainless Steel
- Carbon Steel
- Forged Block
To ensure the highest quality standards, we maintain close partnerships with China's premier special steel manufacturers including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, and Daye Special Steel.
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