How do you pack the steel bars?

Standard seaworthy packing. Bundles are wrapped with steel strips and covered with plastic caps at both ends to prevent damage during ocean transport.

What is your delivery time?

For standard sizes in stock, delivery is within 7-15 days. For forged or customized orders, it takes about 25-40 days depending on quantity.

High Strength AISI 4140 OEM/ODM Custom 42CrMo Solid Steel Round Bar

Name: High Strength AISI 4140 OEM/ODM Custom 42CrMo Solid Steel Round Bar
Brand: Shandong Qianxin Steel Co., Ltd.
SKU: 2196627672

Shandong, ChinaShandong Qianxin Steel Co., Ltd.

US$800.00-1,100.00

1 Ton

Sample price:US$1100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Yes

Warranty

10 Years

Model NO.

AISI 4140 Alloy Steel Round Bar

Type

Alloy Steel Bar

Standard

AISI, ASTM, GB, JIS, DIN, BS

Technique

Customization

Application

Structural Steel Bar, Tool Steel Bar, Die Steel Bar

Alloy

Special Use

Mold Steel, Free Cutting Steel, Cold Heading Steel

Model No.

AISI4140 / 42CrMo

Form

Round Bar / Round Rod

Diameter Range

φ20-φ600 mm

Supply Condition

Annealed / Normalized / Q+T

Heat Treatment Option

Quenched & Tempered (Q+T)

Production Method

Hot Rolled / Forged / Cold Drawn

Finishing Option

Precision Ground

Surface Condition

Black / Peeled / Turned

Core Features

Strength + Toughness + Hardenability

Machinability

Good Machinability

Inspection

Chemical & Mechanical Testing

Traceability

Mill Test Certificate

Transport Package

Custom Made

Specification

AISI 4140 Alloy Steel Round Bar

Trademark

QIANXIN

Origin

Shandong, China

Production Capacity

50000pieces/Year

Key features

Comprehensive Warranty Coverage: 10-year warranty provided for all mechanical equipment and steel products.

High Machinability: Excellent machining performance for shafts, gears, connectors, and precision components.

Flexible Heat Treatment: Available in Annealed, Normalized, or Quenched & Tempered (Q+T) with hardness customization.

Full Traceability & Testing: Includes Mill Test Certificates (MTC), chemical & mechanical testing, and ultrasonic inspection.

Multiple Processing Options: Supply as Hot Rolled, Forged, Cold Drawn, or Precision Ground to match specific needs.

Customization Support: Offers precision cutting, non-standard diameters, and small-batch trial orders.

International Standards Compliance: Meets GB, ASTM, JIS, DIN, and BS standards with ISO and GJB9001C certifications.

Fast Delivery for Stock Items: Standard sizes in stock delivered within 7-15 days; customized orders in 25-40 days.

Company profile

Shandong Qianxin Steel Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 years CertifiedNearest Port: Qingdao Port CertifiedTerms of Payment: LC, T/T, D/P, etc.

About Our Factory & Business Background

AddressLiaocheng, Shandong, China

Plant Area3015 square meters

Number of Employees10

Registered Capital10,000,000 RMB

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

Average Lead TimePeak Season Lead Time: within 15 workdays, one month Off Season Lead Time: within 15 workdays

Minimum Order Quantity1

Supply Chain Partners20

Our Production Capability & Technical Expertise

Main ProductsSteel Round Bar, Seamless Steel Pipe, Steel Plate, Shaped Steel Tube

Production Lines1

Production MachinesBand sawing machine

QA/QC inspectors2 people

Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)

Inspection Method for Finished ProductsFinished product checked by packing staff

R&D Engineers2 people

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2021-07-07

Main MarketsDomestic

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff3

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Management System CertificationISO9001:2015, ISO45001:2018, ISO14001

Cooperated with Fortune 500No

Product Q&A

Q:Can you provide the Mill Test Certificate (MTC)?

Yes, we provide EN 10204 3.1 MTC with every shipment, detailing chemical composition and mechanical properties. Third-party inspection (SGS/BV) is also welcome.

Q:What is the difference between Hot Rolled and Forged bars?

Hot rolled bars are generally for smaller diameters (usually <100mm). Forged bars are for larger diameters (>100mm) and offer better internal density and mechanical properties for critical parts.

Q:Do you offer heat treatment services?

Yes, we can provide Quenching and Tempering (Q+T), Annealing, or Normalizing services according to your required hardness (e.g., HB 250-300).

Q:Can I visit your factory before placing an order?

Absolutely! We encourage factory visits. It is the best way to verify our quality and capacity. We have a dedicated team to handle visa invitation letters, airport pick-up, and accommodation arrangements. Whether you are checking the raw materials or inspecting the finished 40CrNiMoA bars, we will accompany you throughout the process.

Q:Do you provide samples for testing?

Yes. For standard sizes, we can provide free samples (freight collect). For customized specifications or large forged bars, we can produce a sample batch for your approval before mass production.