JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity |
| Packaging Details | standard packing for export |
| Products Name | Alloy Steel Round Bar |
| Diameter | 10 - 500mm |
| Length | 6m |
| Tech | Hot rolled |
| Service | Cutting |
| MOQ | 1 Ton |
| Loading Port | Shanghai Port |
| Standard | ASTM EN GB |
| Brand Name | DELTA |
| Model Number | 31CrMoV9 |
| Certification | ISO |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity | Packaging Details | standard packing for export |
| Products Name | Alloy Steel Round Bar | Diameter | 10 - 500mm |
| Length | 6m | Tech | Hot rolled |
| Service | Cutting | MOQ | 1 Ton |
| Loading Port | Shanghai Port | Standard | ASTM EN GB |
| Brand Name | DELTA | Model Number | 31CrMoV9 |
| Certification | ISO | Place of Origin | China |
| High Light | 13mm 31CrMoV9 Steel Round Bars ，20mm 31CrMoV9 Steel Round Bars ，1.8519 31CrMoV9 Steel Round Bars | ||
13mm- 20mm 31CrMoV9 Nitriding Steel Bar / 1.8519 Alloy Steel Round Bars 200mm 250mm 350mm 370mm
Products Specification
| Products Name | 31CrMoV9 Alloy Steel Round Bar |
| Diameter | 10 - 500 mm |
| Length | 6m or custom cutting any length as request |
| Type | Hot Rolled |
| Brand | BAOSTEEL DELTA DONGBEI HUAXI SHAGANG.etc |
| MOQ | 1 Ton |
| Loading Port | Shanghai Port |
| Packing | packing by steel wire rope |
| Deliver time | 5 - 7 days for stock materials |
| Other Grade | Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov,15CrMo,304,3 16,20Cr,40Cr,20CrMo,35CrMo,42CrMo,40CrNiMo,GCr15,65Mn,50Mn, 50Cr,3Cr2W8V,20CrMnTi,5CrMnMo ,38CrMoAl, 31CrMoV9 |
| Standard | ASTM GB EN DIN |
| Application | Structure and Industrial |
Here’s a detailed technical overview of Alloy 1.8519 Round Steel
Alloy 1.8519 is a high-strength, low-alloy steel grade designed for applications requiring excellent mechanical properties, weldability, and fatigue resistance. It is commonly used in heavy-duty machinery, automotive components, and structural engineering due to its balanced composition and reliability under stress.
| Element | C | Si | Mn | Cr | Mo | Ni | P (max) | S (max) |
|---|---|---|---|---|---|---|---|---|
| Content | 0.38–0.45 | 0.15–0.35 | 0.60–0.90 | 0.90–1.20 | 0.15–0.30 | ≤0.40 | ≤0.025 | ≤0.020 |
Note: Exact composition may vary by manufacturer and standard.
| Property | Value (Typical) |
|---|---|
| Tensile Strength | 900–1100 MPa |
| Yield Strength (Rp0.2) | 700–850 MPa |
| Elongation (A₅) | ≥12% |
| Impact Energy (Charpy, -20°C) | ≥40 J |
| Hardness (HBW) | 270–320 |
Conditions: Quenched & tempered (QT) state.
Hot-rolled (HR): Rough surface, as-rolled condition.
Cold-drawn (CD): Improved dimensional accuracy, smoother surface.
Heat-treated (QT): Quenched & tempered for optimal strength-toughness balance.
Black (unpeeled) or Peeled/Turned: Surface finish options.
EN/DIN: 1.8519 (European standards, similar to 42CrMo4 variants).
ASTM/SAE: Comparable to AISI 4140 but with adjusted Cr/Mo ratios.
ISO: Equivalent grades under ISO 683-1.
Diameter: 10mm–500mm (custom sizes available).
Length: 3m, 6m (standard), or cut-to-length.
Tolerance: EN 10060, DIN 1013, or customer-specific.
Melting: Electric arc furnace (EAF) or ladle refining.
Casting: Continuous casting into billets.
Hot Rolling: Formed into round bars at 1100–1250°C.
Cold Drawing (Optional): For precision dimensions.
Heat Treatment: Quenching & tempering (QT) for final properties.
High Strength-to-Weight Ratio: Ideal for dynamic loads.
Good Fatigue Resistance: Suitable for cyclic stress applications.
Weldability: Requires preheating (~200–300°C) and post-weld annealing.
Machinability: Moderate; improved with annealing.
Quenching: Heated to 850–880°C, oil-cooled.
Tempering: 550–650°C to adjust hardness/toughness.
Annealing: 650–700°C (softening for machining).
Normalizing: 850–900°C + air cooling (refines grain structure).
Automotive: Crankshafts, gears, axles.
Oil & Gas: Drill pipes, tool joints.
Machinery: Hydraulic rods, bolts, couplings.
Construction: High-stress structural components.
This summary covers all critical aspects of Alloy 1.8519 Round Steel. Let me know if you need additional details!
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
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