What standards does this steel meet?

It meets AISI, ASTM, DIN, JIS, GB, and BS standards.

What are the available surface treatments?

Surface treatments include polished or other options.

Which industries use this alloy steel?

It is widely used in aerospace, oil and gas, automotive, agricultural, and defense industries.

High-Quality ASTM AISI 4140 Alloy Steel Round Bar

Name: High-Quality ASTM AISI 4140 Alloy Steel Round Bar
Brand: Hunan Shunfu Metal Material Co., Ltd.
SKU: 2028596145

Hunan, ChinaHunan Shunfu Metal Material Co., Ltd.

US$1,100.00

1 Ton

Sample price:US$50.00/kg.Request sample

Product profile

Customization

Available

Type

Alloy Steel Bar

Standard

AISI, ASTM, DIN, JIS, GB, BS

Model NO.

4140

Composition

Alloy

Technique

Rolled or Forged

Shape

Bar

Surface Treatment

Polished or Other

Special Use

for Oilfield

Application

for Oilfield

Transport Package

Anti-Corrosion

Specification

20-600mm

Trademark

SHUNFU

Origin

China

HS Code

7228600000

Production Capacity

100000 Tons Per Year

Key features

Versatile Alloy Composition: Contains chromium, molybdenum, and manganese for toughness and impact resistance.

High Fatigue Strength: Excellent material choice for forgings in aerospace, automotive, and defense industries.

Superior Machinability: Good machinability in annealed condition with 65% efficiency based on AISI 1212.

Customization Available: Customization options available from samples and designs.

Wide Standard Compliance: Meets AISI, ASTM, DIN, JIS, GB, and BS standards.

Flexible Surface Treatment: Available in polished or other surface treatments.

Robust Mechanical Properties: Tensile strength up to 95000 psi with high ductility and hardness.

Comprehensive Heat Treatment: Supports quenching, tempering, annealing, and normalization for specific hardness.

Company profile

Fast DeliveryLow MOQExperienced Team

Hunan Shunfu Metal Material Co., Ltd.

Hunan, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 7 years CertifiedNearest Port: shanghai portAverage Response Time: ≤7.28h

AI-Powered supplier vetting

SummaryHunan Shunfu Metal Material Co., Ltd. is a limited company supplying steel pipe, with 24 employees and stated annual output of 100,000 tons of oil steel products. It provides OEM and ODM services and can customize from samples or designs, but it does not provide 3D software design, has no SDK, and launched no new products in the past year. Export sales represent 71%–90% of total sales, with Southeast Asia and the Middle East identified as primary markets; however, it reports no overseas showroom, agents, branches, or offline trade-show participation. Lead time is one month in both peak and off-peak seasons. The available audit record identifies SGS as the auditor, but the stated audit result is 0 and no certification is identified. Quality and service governance evidence is weak because written procedures or records are absent for supplier approval, corrective actions, complaint handling, and service assessment. Financial records are referenced for 2021–2023, but their actual performance is not provided.

Supplier typeThe supplier is identified as Hunan Shunfu Metal Material Co., Ltd., a limited company with 24 employees whose primary and offered product is steel pipe. It is not part of a larger company group, and its stated business scope includes permitted company operations and import/export activities.

After-Sales capabilityThe supplier has no overseas showroom, agents, branches, or reported offline trade-show participation. It also has no written procedures or records for customer complaints, corrective and preventive actions, or service-capability assessment, indicating limited documented after-sales infrastructure.

R&D capabilityThe supplier is described as a professional technical supplier and offers ODM services, but it has only one year of total R&D engineer experience, no SDK, no 3D software design service, and no new products launched in the past year. These stated limitations demonstrate a deficiency in innovation resources and recent product development.

Production capacityThe supplier reports annual production of 100,000 tons of oil steel products, with one-month lead times in both peak and off-peak seasons. Its product scope is steel pipe, and the stated production information supports established manufacturing capacity, although the slices do not provide independent verification of output or quality performance.

Customization capabilityThe supplier explicitly provides customization from samples and designs, along with OEM and ODM services. This supports both customer-specified product adaptation and design-manufacturing cooperation, although 3D software design and SDK support are unavailable.