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31CrMoV9 1.8509 / 38CrMoAlA Nitriding Alloy Steel Round Bar For Precision Machining Length 6m Diameter 10-300mm

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31CrMoV9 1.8509 / 38CrMoAlA Nitriding Alloy Steel Round Bar For Precision Machining Length 6m Diameter 10-300mm

Name: 31CrMoV9 18509 38CrMoAlA Nitriding Alloy Steel Round Bar For Precision Machining Length 6m Diameter 10300mm
Brand: DELTA
Price: 600 USD

China 31CrMoV9 1.8509 / 38CrMoAlA Nitriding Alloy Steel Round Bar For Precision Machining Length 6m Diameter 10-300mm wholesale

Brand Name : DELTA

Model Number : 31CrMoV9（1.8509）/ 38CrMoAlA

Certification : ISO

Place of Origin : China

MOQ : 1 Ton

Price : 600-850 USD/Ton

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 - 300mm

Length : 6m

Tech : Hot rolled

Service : Cutting

MOQ : 1 Ton

Loading Port : Shanghai Port

Standard : ASTM EN GB

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31CrMoV9(1.8509)/ 38CrMoAlA Nitriding Alloy Steel Round Bar for Precision Machining

Products Specification

Products Name	38CrMoAlA Nitriding Steel Round Bar
Diameter	10 - 300 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

Product Name: 38CrMoAlA Alloy Steel Round Bar (Nitriding Steel)

Standard: GB/T 3077 (China)
Material Type: High-Strength Nitriding Alloy Steel
Shape: Round Bar (Diameter Range: Φ10mm–Φ300mm, customizable)

Chemical Composition (wt%):

Element	C	Cr	Mo	Al	Mn	Si	P (≤)	S (≤)
Content	0.35~0.42	1.35~1.65	0.15~0.25	1.00~1.30	0.30~0.60	0.20~0.45	0.025	0.025

Mechanical Properties (After Heat Treatment):

Tensile Strength (σ₃): ≥980 MPa
Yield Strength (σ₅): ≥835 MPa
Elongation (δ): ≥14%
Impact Toughness (AKU): ≥63 J
Surface Hardness (After Nitriding): ≥850 HV

Key Features:

Excellent Nitridability: High aluminum (Al) content ensures a hard, wear-resistant nitride layer (0.3–0.5mm depth).
High Core Strength: Suitable for heavy-load components requiring both surface hardness and core toughness.
Stability: Good resistance to tempering and fatigue.

Heat Treatment Recommendations:

Quenching: 930–950°C (Oil cooling)
Tempering: 600–650°C (Air cooling)
Nitriding: 500–530°C (Ion/Gas nitriding for optimal surface hardness)

Typical Applications:

Precision gears, shafts, and spindles
Injection molding machine screws
Aerospace and automotive high-wear components
Hydraulic/pneumatic cylinders

Equivalent Grades (International Standards):

USA (ASTM/AMS): AMS 6470 (Nitraloy 135M)
Europe (EN/DIN): 31CrMoV9 (1.8509)
Japan (JIS): SACM645

Packaging & Delivery:

Packaging: Bundles with steel straps, waterproof paper, or as per customer request.
Surface Protection: Oiled or phosphated to prevent rust.
Lead Time: 15–30 days (Subject to quantity).

Certifications:

Mill Test Certificate (MTC) per EN 10204 3.1
Compliance with GB, ISO, or customer-specified standards.

Note: Custom sizes, heat treatment, and testing (e.g., UT, hardness mapping) are available upon request.

31CrMoV9 1.8509 / 38CrMoAlA Nitriding Alloy Steel Round Bar For Precision Machining Length 6m Diameter 10-300mm

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