40Cr Alloy Steel Plate, also known as 40Cr Alloy Steel Sheet, is a widely used structural alloy steel recognized for its excellent balance of strength, toughness, and wear resistance. This material is produced under strict quality standards such as GB/T, ASTM, and DIN, ensuring consistent performance and reliable durability.
With stable mechanical properties, good hardenability, and reliable machinability, 40Cr Alloy Steel Plate is often supplied with mill test certificates, third-party inspection reports, and complete material traceability documents. At Jiangsu Cunrui Metal Products Co., Ltd., we guarantee international quality standards and competitive supply solutions for global clients.
Features & Advantages
High tensile strength and yield strength compared to standard carbon steels.
Excellent wear resistance and fatigue resistance for long service life.
Good heat treatment response (quenching & tempering) for enhanced hardness.
Stable chemical composition certified by SGS/BV/ISO.
Reliable weldability and machinability, suitable for various processing methods.
Applications
40Cr Alloy Steel Plate is widely used in engineering and manufacturing industries, including:
Automotive and heavy vehicle components (gears, shafts, axles).
Machinery and equipment parts requiring high wear resistance.
Oil, gas, and energy sectors for high-strength structural parts.
Metallurgical tools, pressure vessels, and industrial equipment.
Product Specifications & Technical Data
Basic Information
|
Item |
Details (Typical Values) |
|
Standard |
GB/T 3077, ASTM, DIN Equivalent |
|
Thickness Range |
6 – 150 mm (customized) |
|
Width |
1000 – 3000 mm |
|
Length |
2000 – 12000 mm |
|
Yield Strength |
≥ 540 MPa |
|
Tensile Strength |
850 – 1000 MPa |
|
Hardness (after QT) |
207 – 255 HB |
|
Impact Toughness |
Stable at medium & low temperatures |
|
Surface Finish |
Black, polished, galvanized, coated |
|
Certification |
MTC, ISO, SGS, CE |
Chemical Composition of 40Cr Alloy Steel Plate
|
Element |
Content (%) |
|
C |
0.37 – 0.44 |
|
Si |
0.17 – 0.37 |
|
Mn |
0.50 – 0.80 |
|
Cr |
0.80 – 1.10 |
|
P |
≤ 0.035 |
|
S |
≤ 0.035 |
Customization Services
Special dimensions and shapes available on request.
Processing options: cutting, drilling, welding, bending, and surface finishing.
OEM/ODM support with drawings-based production.
Flexible MOQ for both trial orders and bulk procurement.
Price & Delivery
Competitive factory-direct pricing with volume discounts.
In-stock sizes available for quick shipment.
Customized orders delivered within 15–25 working days.
Transparent quotation with no hidden costs.
Our Strength
Jiangsu Cunrui Metal Products Co., Ltd. operates advanced production facilities with large-scale capacity for alloy steel plate manufacturing. With ISO-certified systems, a professional technical team, and over 15 years of export experience, we serve clients across Europe, America, and Asia with stable quality and strong supply capability.
Service & Support
Fast inquiry response with technical consultation.
International-standard packaging for sea and land freight.
Strict quality inspection before shipment.
After-sales service with replacement/refund policy in case of quality issues.
FAQ
Q1: Is 40Cr Alloy Steel Plate equivalent to AISI 5140?
A1: Yes, 40Cr is the Chinese equivalent to AISI 5140, with similar chemical and mechanical properties.
Q2: Do you provide customized machining?
A2: Yes, we support cutting, drilling, welding, and fabrication according to customer drawings.
Q3: What documents do you supply with the order?
A3: Mill Test Certificates, EN10204 3.1 reports, and third-party inspection reports are available.
Q4: How do you ensure consistent quality?
A4: We follow ISO-certified processes with 100% material traceability and third-party inspection upon request.
Q5: What is your typical lead time?
A5: Standard stock sizes ship in 7–10 days; custom orders require 15–25 days depending on specifications.
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