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Guangzhou Changfeng Steel Co., LTD
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High Strength Alloy Steel Round Bar SAE4140 42CRMO EN19 1.7225 SCM440

China Guangzhou Changfeng Steel Co., LTD certification
China Guangzhou Changfeng Steel Co., LTD certification
Gold supplier! Arranged shipment very fast, quality is super good. They are one of our best suppliers, will do more business with them in the future!

—— Ms Nguyen Thi Hong

We bought 7 containers from them in 2017, no quality problems. The boss is very nice and professional, good business parner!

—— Mr. Wan Rusli

Good job! Shipment was arranged fast, giving lots of good suggestions before place order, saved me time and money.

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High Strength Alloy Steel Round Bar SAE4140 42CRMO EN19 1.7225 SCM440

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Large Image :  High Strength Alloy Steel Round Bar SAE4140 42CRMO EN19 1.7225 SCM440

Product Details:
Place of Origin: China
Brand Name: CF
Certification: ISO
Model Number: SAE4140/42CRMO/EN19/1.7225/SCM440
Payment & Shipping Terms:
Minimum Order Quantity: 3tons
Price: USD750-760/ton FOB
Packaging Details: standard / customized
Delivery Time: 7days
Payment Terms: L/C, T/T
Supply Ability: 1000TONS/month
Detailed Product Description
Material: Alloy Engineering Steel Applications: Making Shaft/bolt/machinery Parts
Process Tech.: Hot Rolled Heat Treatment: Annealed/QT
Condition: Stock Quality Assurance: 100% UT Passed
High Light:

engineering special steels


h13 tool steel

Alloy Engineering Steel Bar high strength SAE4140/42CRMO/EN19/1.7225/SCM440


Product Introduction

42CrMo steel is an ultra-high strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering, and good low temperature impact toughness.

High Strength Alloy Steel Round Bar SAE4140 42CRMO EN19 1.7225 SCM440 0


1. Belong to the ultra-high strength steel

2. High strength and toughness

3. Good hardenability

Similar Standards

Chinese American German Japanese British
42CrMo SAE4140 1.7225 SCM440 EN19

Chemical Composition

Grades C Si Mn P S Cr Mo Cu Ni
4140 0.38-0.45 0.17-0.37 0.5-0.8 ≤0.035 ≤0.035 0.9-1.2 0.15-0.25 ≤0.3 ≤0.035
42CrMo 0.38-0.45 0.17-0.35 0.5-0.8 ≤0.035 ≤0.035 0.9-1.2 0.15-0.25 ≤0.03 ≤0.03
440 0.38-0.43 0.15-0.35 0.6-0.85 ≤0.03 ≤0.03 0.9-1.2 0.15-0.3 ≤0.3 ≤0.25


Heat Treatment

Quenching Tempering
Heating Temperature/℃ Cooling Hardness/HRC Heating Temperature/℃ Cooling Hardness/HRC
820-840 Oil ≥53 450-650 Air 25-40


General Applications

1. Suitable for manufacturing requirment a certain strength and toughness of large and medium-sized plastic mold, such as locomotive traction with the big gear, the supercharger drive gear, pressure vessle, rear axle, gear load connecting rod and a spring clip

2. Used to under 2000m deep well of oil drill pipe joint and the fishing tool

3. Used for bending machine mould

Stock Size

plate  Thickness 20-120mm
Width 2200mm
Length 4000-10000mm
round barHigh Strength Alloy Steel Round Bar SAE4140 42CRMO EN19 1.7225 SCM440 1 Diameter 16-450mm
Length 4000-10000mm

Sizes and Conditions

Our steel materials are in different sizes and conditions specially catered to our customers' needs. They come in round bars, flat bars, plates and block.

The conditions of the materials vary from pre-hardened, hot rolled,annealed, quenched and tempered to surface conditions such as black, pre-machined,griding and polish.

Why choose us?


Quality Assurance from government owned steel mills

At die & tool steel , we meticulously source materials only from steel manufacturers to ensure consistency in providing the finest quality steel products for our customers.

Being in the competitive market today, we clearly understand that customers are looking for products that are not only best in class but also affordably priced. We are confident that we are able to ful fil these two equally vital aspects –our customers' continuous support over the past two decades is the most heartfelt recognition to us.

Speedy and Timely Delivery

Knowing that delivering goods to customers' hands on time is as important as providing quality goods, we treat every business transaction as a priority. Be it a raw material or a finished material with machining or heat treatment, every effort will be made to get your purchase order to you in the shortest lead time.

Quality Commitment

In order to realise competitive products to fulfil our customers' demands and quality considerations, our integrated quality and work management system is continuously being improved and developed further. We document this for our customers by having our quality management system certified in accordance with ISO 9001. This measure is accompanied by audits and recertification's on a regularly prescribed basis.

Our service

We provide quality special steel for all industries.

Orders of any size, any length, ship fast

We carry a unique inventory of specialty special steel

Provide related value-adding services :

metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.

Sawing for small or large quantities, sawing-to-size.

Excellent customer service


High Strength Alloy Steel Round Bar SAE4140 42CRMO EN19 1.7225 SCM440 2

Quality Inpsection

High Strength Alloy Steel Round Bar SAE4140 42CRMO EN19 1.7225 SCM440 3

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Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +86 18148729336

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