51CrV4 spring steel is a well-known alloy steel, specifically designed for high-performance applications. The key 51CrV4 properties of high strength, excellent toughness, and fatigue resistance are developed through heat treatment. It has high fatigue strength, high yield ratio, but poor weldability, low plasticity due to cold deformation. The addition of chromium and vanadium gives this 51CrV4 material superior resilience compared to standard carbon steels.
It is often used to make large cross-section, high-load important springs, and valve springs, piston springs, and safety valve springs with an operating temperature of <300 ℃.
Why Choose Us
1. Consistent Quality – Quality is Our Lifeline
With great majority of raw materials from Baosteel, we ensure full in-house production control. Complete testing of mechanical properties with guaranteed thickness/width tolerance compliance.
2. Export Specialists – We Handle the Complexities
As 10+ years serving major overseas manufacturers, we can professionally handle the requirements of compliance, documentation, and shipping with proven track record.
3. Convenient Resources – As Easy As Local Supply
Flexible orders from small batches to large volumes. Multiple shipping options(LCL, FCL, Bulk Carrier) with dedicated after-sales support and regular customer visits.
4. Low Minimum Order & Sample Availability
We accept small orders starting from 0.5–5 tons and provide samples for evaluation, helping you verify quality before bulk purchasing.
Product Serve
| Grade | 51CrV4 | Certificate | IATF 16949:2016, ISO 45001, ISO 9001, ISO 14001 |
| Thickness (mm) | 0.15-5.00 (Required) | Technique | Cold Rolled / Hot Rolled |
| Width (mm) | 10-1250 (Provide slitting service) | Surface | Polished |
| Coil ID (mm) | 450/508/others | Edge treatment | Round edge |
| Condition | Available in Annealed or Hardened condition | Delivery Time | 2-4 weeks (Negotiate) |
| Production period | 2-4 weeks (Negotiate) | Package | Standard Package,Deluxe Package, Export Package |
| MOQ | 0.5 Ton |
Grade Equivalent Chart
Below are the chemical composition of 51CrV4 steel and the equivalent grade designations under various standards for your reference.
| Standard | Grade | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Cu(%) | V(%) |
|---|---|---|---|---|---|---|---|---|---|---|
| EN | 51CrV4 | 0.47-0.55 | ≤0.40 | 0.70-1.10 | ≤0.025 | ≤0.025 | 0.90-1.20 | — | — | 0.10-0.25 |
| GB/T | 50CrV4 | 0.47-0.54 | 0.17-0.37 | 0.50-0.80 | ≤0.030 | ≤0.030 | 0.80-1.10 | — | — | 0.10-0.20 |
| ASTM | 6150 | 0.48-0.53 | 0.15-0.35 | 0.70-0.90 | ≤0.035 | ≤0.040 | 0.80-1.10 | — | — | ≥0.15 |
| JIS | SUP10 | 0.47-0.55 | 0.15-0.35 | 0.65-0.95 | ≤0.030 | ≤0.030 | 0.80-1.10 | — | — | 0.15-0.25 |
Our engineering team is available to assist with your unique project needs. Feel free to contact us to discuss your application, and we will gladly provide material suggestions and arrange for samples.
Processing view of factory
The main production process for our medium and high carbon steel products are as follows. We Strict compliance with customer requirements for thickness and width tolerances. Our fully in-house production line ensures consistent material stability at all times.
51CrV4 Steel Coil Surface Details
Alloy Steel Coil in Processing
Alloy Steel Package Details
Medium-carbon steel (0.3%-0.6% Carbon) is a highly versatile material utilized across various industries for its balanced properties. Key applications include:
- Mechanical Components: Springs, clutch parts, washers, chain parts, retainers.
- Tools & Blades: Measuring tapes, hand saws, can openers, Thompson blades.
- Safety & Structural Parts: Safety shoes, safety buckles, structural camera parts, office equipment parts.
If you have requirements for your product’s performance, but are not sure about the most suitable grade, or want to know more information about a specific grade, please do not hesitate to contact us.
Factory certificates
Our factory fully certified under IATF 16949, ISO 9001, ISO 14001, and ISO 45001 standards.
Performance Test
For each exported batch of high-carbon steel, we measure thickness and width to confirm they meet your specifications. Upon request, we can also provide metallographic examination, tensile & elongation test and hardness testing.
Trust by foreign customers
With over 10 years of export experience, we have delivered thousands of tons to customers in more than 20 countries and earned widespread acclaim.
