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SUP10 Spring Steel Sheet
xxheise
SUP10 spring steel complies with JIS G 4801‑2021 standard, a chromium‑vanadium alloy spring steel comparable to AISI 6150 and 51CrV4 1.8159. Vanadium refines grain structure and reduces overheating sensitivity, delivering outstanding fatigue resistance, high tensile strength and stable elastic performance under cyclic‑stress conditions, with reliable service capacity up to 300°C.
We supply hot‑rolled, forged and cold‑drawn SUP10 in round bar, flat bar and plate forms with broad size coverage and custom‑cut service. After quenching and tempering, it gains excellent hardenability, wear resistance and impact toughness to resist deformation and fracture under heavy vibration. ISO 9001 certification and EN10204 3.1 test reports are available. It is widely used for automotive suspension springs, valve springs, railway components and heavy‑duty industrial spring parts for global B2B manufacturing buyers.
WhatsApp ：8613052238878
Email ：elena@shengxisteel.com

- PRODUCT PARAMETERS -

SUP10
Basic information
GradeSUP10
StandardJIS G4801-2005
TypeSpring steel
ProductHot rolled materials
ApplicationBasic components
ExplanationThis product is used for heat-treated spring materials, such as laminated springs, helical springs, and torsion bars.
Chemical composition (wt%)
Carbon CSilicon SiManganese MnPhosphorus PSulfur SNickel NiChromium CrCuprum CuVanadium V
0.47~0.550.15~0.350.65~0.95≤0.030≤0.030≤0.350.80~1.10≤0.250.15~0.25
Basic mechanical properties
Rm(MPa)ReL(MPa)A(%)Z(%)Hardness
≥1274(130)≥1127(115)≥10≥40Hot rolling：≤321HB；Cold drawing + heat treatment：≤321HB


Product Attributes:


Item

Details

Product name

SUP10 Spring Steel Sheet

material

SUP10, JIS G 4801-2021, 51CrV4, DIN 1.8159, AISI 6150

Thickness

0.1~6mm, or as your request

Standard

JIS G 4801-2021, EN 10089, DIN 17221

Technique

Cold rolled, Hot rolled, Heat-treated

Application

Precision stamping parts, spring shims, circlips, automotive clutch plates, small elastic components, electronic hardware accessories


SUP10 parameters


Item

Details

Grade

SUP10

Standard

JIS G 48012021

Type

Chromiumvanadium alloy spring steel

Product

Hotrolled Bar, Forged bar, Colddrawn bar, Plate

Application

Highstress springs, Automotive suspension spring, Valve spring, Railway spring components

Explanation

SUP10 is a CrV alloy spring steel, equivalent to DIN 51CrV4 (1.8159) and AISI 6150, used for heavyload cyclicstress elastic parts.


Carbon C

Silicon Si

Manganese Mn

Phosphorus P

Sulfur S

Chromium Cr

Vanadium V

0.47~0.55

0.15~0.35

0.65~0.95

≤0.030

≤0.030

0.80~1.10

0.15~0.25

Grade

Shape

Details


Explanation

SUP10

Bar / Plate

Re (MPa)

≥1080

After quenching and tempering heat treatment



Rm (MPa)

12201470




Elongation (%)

≥10

JIS test specimen


Product Selling Points


SUP10 spring steel sheet conforms to JIS standard, added with chromium-vanadium alloy elements, providing high tensile strength, outstanding fatigue resistance and anti-relaxation performance under cyclic dynamic load.

Excellent temper stability, maintains stable elastic performance under moderate-temperature service, not easy to produce permanent deformation after long-time repeated compression and vibration.

Uniform grain structure, good hardenability after heat treatment, perfect for manufacturing spring washers, flat springs, leaf springs, clamping shims and various elastic stamping parts.

Good ductility in annealed state, suitable for stamping, bending, laser cutting and blanking processing, supports custom-size cutting to meet customers’ different component-making demands.

Strict raw-material and process control, full mill test certificates supplied, widely used in automobile parts, engineering machinery, hardware elastic components and industrial spring-making fields.


- FACTORY DISPLAY -

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We have our own independent factory which can provide one-stop service for steel cutting, forming and surface treatment. The factory has a strict quality inspection system and various precision testing instruments, and has passed all the third party quality tests such as SGS, BV and CE.

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【 OUR CERTIFICATIONS 】

- CUSTOMER VISITS -

We are listed as a high-quality supplier by many overseas customers andforeign trade companies.

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- PRODUCTION AND PROCESSING -

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- PACKING & DELIVERY -

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- FAQ -

Q What is SUP10 spring steel

A SUP10 is JIS G 4801‑2021 chromium‑vanadium alloy spring steel, equivalent to AISI 6150 and 51CrV4 1.8159, designed for high‑stress thermal‑formed spring components.

Q What product forms of SUP10 can you provide

A We offer SUP10 in hot rolled forged cold drawn round bar flat bar and plate. Custom diameter and custom cut‑to‑length processing are supported for client‑specific requirements.

Q What are the key performance advantages of SUP10

A SUP10 features fine grain structure, low overheating sensitivity, superior fatigue resistance and good thermal stability up to 300°C, with excellent hardenability after quenching and tempering treatment.

Q What are typical applications for SUP10 spring steel

A SUP10 is widely used for automotive suspension coil springs, engine valve springs, railway buffer springs, stabilizer bars and heavy‑duty industrial spring parts under cyclic load and vibration.

Q Can you provide material inspection documents for SUP10

A Yes. ISO 9001 certificate and EN10204 3.1 material test reports are available for each batch. Strict pre‑delivery inspection guarantees consistent mechanical properties.


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