E STEEL SDN. BHD.
No 1 & 3, Lorong Sungai Puloh 7/KU6, Kawasan Perindustrian Sungai Puloh, 42100 Klang, Selangor, Malaysia.

+603-3292 8686

AISI 4140 | SCM440 | 709 Steel | EN19 High Tensile Steel Plate

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AISI 4140 / SCM440 Alloy Steel Plate – High Tensile Steel Platet Supplier in Malaysia

Your Trusted Supplier for 4140 4140QT / SCM440 / 42CrMo4 / 1.7225 / EN19 Steel Plates.
At E STEEL SDN. BHD., we provide a comprehensive range of high-tensile alloy steel plates that meet global industrial standards. Whether you are searching for AISI 4140 (USA standard), SCM440 (JIS standard), 42CrMo4 or 1.7225 (DIN standard), 709 steel, or EN19 high-tensile plates, we maintain a ready stock to support your engineering requirements.

These material grades are globally recognized for their excellent strength, toughness, and wear resistance.
As a premier steel supplier in Malaysia, E STEEL ensures that no matter which designation your technical drawing specifies—be it 4140QT or traditional 4140— we provide the right specifications of the steel metals according to your requirements.

JIS G4105 / JIS 4053 SCM440 is medium carbon chromium molybdenum alloy steel. It is an low alloyed steel containing chromium and molybdenum.
SCM440 material has the advantages of stable composition, low harmful elements, high steel purity, small decarburization layer and few surface defects.
It’s usually supplied as hardened and tempered condition while some customers also just require hot rolled/as rolled condition.

The SCM440 steel material achieves a very good balance between strength, toughness and wear resistance. JIS SCM440 material provides many desirable properties such as good strength and wear resistance, excellent toughness, good ductility and resistance to high-temperature stresses.

Chemical Composition of 42CrMo4 / 709 Steel

DIN

AISI

JIS

Chemical Composition

42CrMo4

4140H

SCM 440H

0.37 to 0.44

0.15 to 0.35

0.65 to 1.10

< 0.04

< 0.03

–

0.75 to 1.20

0.15 to 1.25

< 0.25

–

< 0.35

Common 4140QT Steel Plate Specifications

Country	USA	German	British	Japan	China	Australia
Standard	ASTM A29	DIN 17200	BS 970	JIS G4105	GB/T 3077	AS 1444
Grades	4140	1.7225/ 42crmo4	42CrMo4	SCM440	42CrMo	4140

Mechanical Properties of 1.7225 High Tensile Steel

Tensile strength (kgf/mm²): ≧100
Yield strength (kgf/mm²): ≧85
Elongation (%): ≧12
Cross section reduction rate (%): ≧45
Impact value (J/cm2): ≧6
Hardness (Hb) : 285~352

Heat Treatment of Material 709 Steel

Annealing: 830℃ Furnace Cooling
Normalization: 830~880℃ Air Cooling
Hardening: 830~880℃ Oil Cooling
Tempering: 530~630℃ Rapid Cooling

Frequently Asked Questions About 4140/SCM440 Alloy Steel

Q: Are 4140, SCM440, and 42CrMo4 the same material?
✅: Yes, they are highly similar in chemical composition and mechanical properties. AISI 4140 is the American standard, SCM440 is the Japanese (JIS) standard, and 42CrMo4 (or 1.7225) is the German (DIN) standard. E STEEL Malaysia supplies these equivalents to ensure your production line continues without interruption.
Q: What is the difference between 4140 and 4140QT?
✅: ''QT'' stands for Quenched and Tempered. While standard 4140 is in as rolled condition. 4140QT steel is heat-treated to achieve specific mechanical properties like high hardness and strength, making it ideal for high-stress applications. E STEEL offers both variants.
In E Steel Sdn Bhd, our 4140QT high tensile steel plates is in the hardness of 28-32HRC.
All materials come with Mill Test Certificate (MTC) to suppport.
Q: Where can I buy EN19 or 709 steel in Malaysia?
✅: E STEEL SDN. BHD. is your reliable supplier for EN19 and 709 steel plates in Malaysia. We provide custom cutting services for these high-tensile grades to suit your exact design specifications.
Q: What is the difference between 2311 and 4140/4140QT?
✅: Some might mixed replace material 1.2311 with the 4140/4140QT material due to cost. AISI 4140/4140QT is a structural alloy steel designed for high-stress mechanical parts (gears, shafts, bolts) requiring superior toughness.
DIN 1.2311 (P20) is a pre-hardened plastic mold steel specifically optimized for mold-making, featuring better polishability and texture-processing properties.
If you are manufacturing a structural component, choose 4140; for plastic injection molds, choose 2311.
Q: What is the thickness available for 4140 / 4140QT Steel Plate ?
✅: In E STEEL SDN. BHD, we keep stock from size thickness 10mm to over 200mm, with the support of cut to size service using bandsaw cutting.

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