What are the typical mechanical properties?

Tensile strength up to 1080MPa, Yield strength 930MPa, Hardness up to 321HB (QT), and Elongation 12-16%.

How are the steel bars packaged?

Bundled and securely metal strapped in 3 places, tagged properly, and wrapped in plastic or palletized as requested.

What standards does the steel comply with?

Complies with AISI, ASTM, DIN, JIS standards, including grades like 42CrMo4, SCM440, and 1.7225.

Premium SAE4140 Cold Drawn Alloy Steel for Industrial Applications

Name: Premium SAE4140 Cold Drawn Alloy Steel for Industrial Applications
Brand: Shandong Dajin Metal Material Co., Ltd.
SKU: 757675142

Shandong, ChinaShandong Dajin Metal Material Co., Ltd.

US$600.00-880.00

2 Tons

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Type

Round

Standard

AISI, ASTM, DIN, JIS

Model NO.

alloy steel bar

Composition

Ferrous Steel Scrap

Technique

Cold Drawn

Shape

Bar

Surface Treatment

Polished

Special Use

Cold Heading Steel

Application

Structural Steel Bar

Surface

Black or Bright Steel

Material

Alloy Steel Bar

Cutting Service

Yes

Main Grade

B7 Alloy Steel Rod

Transport Package

Anti-Rust Packaging

Specification

dia: 5mm-100mm

Trademark

dajin

Origin

China

Production Capacity

2000

Key features

Cutting Service Available: Supports cut-to-length services including flat, round, square, hexagonal bars, and steel plates.

Wide Size Range: Round bars 5mm-130mm, Square 6x6mm-100x100mm, Flat 3x20mm-50x100mm, Hex 6mm-100mm.

Custom Tolerance: Standard h9, h10, h11 or other tolerances according to client's requirement.

Multiple Surface Finishes: Options include Peeled, Cold Drawn, Turned & Polished, and Centreless Ground.

Fast Delivery: 7-10 days for stock items; 30 days for new material orders after confirmation.

High Strength Alloy: SAE4140/42CrMo4 with tensile strength up to 1080MPa and hardness up to 321HB.

Secure Packaging: Bundled with metal straps, tagged properly, and wrapped in plastic or palletized.

Global Standards: Complies with AISI, ASTM, DIN, JIS standards with alternative grades available.

Company profile

Shandong Dajin Metal Material Co., Ltd.

Shandong, China

Business Type: Manufacturer/FactoryExport Year: 2017-03-04Nearest Port: Qingdao port, Tianjin port, Shanghai portAverage Response Time: ≤7.49hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, FAS, DDP, CPT, FCA, EXW

AI-Powered supplier vetting

SummaryShandong Dajin Metal Material Co., Ltd. is identified as a Chinese manufacturer/factory based in Shandong, with four production lines, stated production capacities for several steel-bar categories, and export activity across multiple regions. It holds ISO 9001 and OHSAS/OHSMS 18001 certifications and states that it can supply multiple international standards and customized steel products. The supplier reports export activity since 2017 and that exports represent 51%–70% of total sales. Evidence supports production scale, certification, customization, and international trading capability. However, the provided information does not sufficiently establish after-sales service processes, innovation capability, or financial credibility. Trade records show named buyers and shipments involving Brazil and Pakistan, but the limited transaction evidence does not establish broad or sustained customer performance.

Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory and operates as Shandong Dajin Metal Material Co., Ltd., a limited company located in Shandong, China. This directly supports its status as a manufacturing supplier rather than only a trading entity.

CertificationsThe supplier reports holding ISO 9001 and OHSAS/OHSMS 18001 management-system certifications. These stated certifications provide explicit evidence of quality-management and occupational health and safety systems, although certificate validity dates and scope are not provided.

Production capacityThe supplier reports four production lines, 11–20 years of total R&D-engineer experience, 11–20 quality-control staff, and substantial stated capacities for steel bar, carbon steel round bar, and cold-drawn steel bar. It also reports ready stock of 1,000–1,500 tons for specified products and exports to multiple global regions, providing explicit evidence of meaningful production and fulfillment capability.

Customization capabilityThe supplier explicitly states that it can provide products to GB, American, German, Japanese, industry, and special steel standards and can offer customized services according to customer requirements. Its listed grades and 5 mm–300 mm size range for certain stocked products further support product configuration flexibility.

Client casesTrade records associate the supplier with named buyers in Brazil and Pakistan and show shipments involving steel-related products through Qingdao, including a recorded transaction count of one for one buyer and two for another. These records provide evidence of actual international customer transactions, but the limited number of documented cases does not establish a broad, long-term, or independently verified customer portfolio.