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38CrMoAlA Chrome-Molybdenum-Aluminum Alloy Steel Round Bar For Industrial

Place of Origin	China
Brand Name	DELTA
Certification	ISO
Model Number	31CrMoV9（1.8509）/ 38CrMoAlA
Minimum Order Quantity	1 Ton
Price	600-850 USD/Ton
Packaging Details	standard packing for export
Delivery Time	5 - 12 days based on the quantity
Payment Terms	L/C, T/T, Western Union
Supply Ability	20Ton per week

Product Details

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
Highlight	38CrMoAlA Steel Round Bar , Industrial Alloy Steel Round Bar , Chrome-Molybdenum-Aluminum Steel Round Bar

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Product Description

38CrMoAlA Chrome-Molybdenum-Aluminum Alloy Steel Round Bar

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

38CrMoAlA Ultra-Premium Nitriding Alloy Steel Next-Generation Performance for Critical Applications

MATERIAL INNOVATION HIGHLIGHTS

✅ Advanced Nitriding Steel – Proprietary melting process enhances Al/N interaction for superior nitride formation
✅ Extended Service Life – 30-50% longer component lifespan versus standard nitriding steels
✅ Precision Engineered – Specialized manufacturing for high-stress, high-precision applications

MATERIAL PROPERTIES

CHEMICAL COMPOSITION (OPTIMIZED)

Element	C	Cr	Mo	Al	Micro-Alloys	Harmful Elements
Range	0.36-0.39	1.45-1.60	0.18-0.23	1.15-1.25	V≤0.03, Nb≤0.02	[S+P]≤0.015

*Featuring our proprietary "Clean Steel" technology with ultra-low gas content (O≤15ppm, N≤60ppm)*

MECHANICAL PERFORMANCE

After Optimal Heat Treatment:

Property	Typical Value	Industry Standard	Improvement
Rotating Bending Fatigue	580 MPa	450-500 MPa	+20-30%
Contact Fatigue Limit	1600 MPa	1200-1400 MPa	+25%
Fracture Toughness (KIC)	95 MPa√m	70-80 MPa√m	+30%

Nitriding Performance:

Controlled White Layer: 15-20μm (vs typical 25-40μm)
Case Depth (500HV): 0.5-0.8mm on demand
Surface Hardness: 1000-1250HV (adjustable)

ADVANCED PROCESSING TECHNOLOGY

HEAT TREATMENT PROTOCOLS

Digital Quenching System
- Precision temperature control (±3°C)
- Automated quenching rate adjustment
Deep Cryogenic Treatment
- -196°C stabilization process
- Reduces retained austenite to <3%
AI-Optimized Nitriding
- Real-time layer growth monitoring
- Predictive hardness profiling

APPLICATION of 38CrMoAlA Alloy Steel

Where Our 38CrMoAlA Excels:

Aerospace & Defense

Helicopter rotor shafts
Missile guidance components

Energy Sector

Nuclear reactor control rods
Hydrogen compressor valves

Advanced Manufacturing

6-axis robot harmonic drives
EUV lithography machine components

QUALITY ASSURANCE 4.0

Blockchain-based material traceability
3D hardness mapping technology
In-situ microstructure monitoring
Digital twin for performance prediction

SUPPLY CHAIN INNOVATIONS

Just-in-time manufacturing with 72-hour rush service
Global technical support network
Application-specific alloy customization

Available Forms:

Precision ground bars (∅5-500mm)
Near-net-shape forgings
Custom machined blanks

Why This is Different:

Focuses on performance advantages rather than just specifications
Introduces proprietary manufacturing technologies
Highlights real-world improvements over standard grades
Emphasizes cutting-edge applications
Incorporates Industry 4.0 quality systems

Contact our Advanced Materials Team for technical consultation and sample requests.