RM Aerospace Alloys
RM Aerospace Alloys
East Delhi, New Delhi, Delhi
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Nickel Alloy Products

Pioneers in the industry, we offer alloy steel sae 4140 and copper nickel 70/30 fasteners from India.

Alloy Steel SAE 4140

Alloy Steel SAE 4140
  • Alloy Steel SAE 4140
  • Alloy Steel SAE 4140
  • Alloy Steel SAE 4140
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Approx. Price: Rs 100 / KgGet Latest Price
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Product Details:

Minimum Order Quantity20 Kg
Size/Diameter1 inch
MaterialAlloy Steels
Single Piece Length6 meter
Delivery DetailsImmediately
Yield strength415 MPa
Tensile Strength655-740 MPa
Surface TreatmentHot Rolled
Test CertificatesAvailable
Country of OriginMade in India

SAE 4140 steel is a versatile and widely used alloy steel known for its impressive strength and toughness. It belongs to the AISI/SAE A29 standard. Here we talk about different aspects of SAE 4140, including its chemical composition, mechanical properties, equivalent materials, and applications. Otai supplies SAE 4140 round bar and plate worldwide for over 20 years. We supply you right and reliable quality SAE 4140 steel.

4140 Chemical Composition

The chemical composition of SAE 4140 alloy steel is basic for its properties and applications. This 4140 alloy typically contains:

  • Carbon: 0.38-0.43%
  • Manganese: 0.75-1.00%
  • Chromium: 0.80-1.10%
  • Molybdenum: 0.15-0.25%
  • Silicon: 0.15-0.30%
  • Phosphorus: Max 0.035%
  • Sulfur: Max 0.04%
Mechanical Properties of SAE 4140

SAE 4140 mechanical properties are what make it an excellent option for various industrial applications. Key properties include:

  • Tensile Strength: Typically ranges between 655-740 MPa
  • Yield Strength: Approximately 415 MPa
  • Elongation: Around 25.7%
  • Hardness: Brinell hardness of around 197

These properties can vary depending on the treatment processes like QT or annealig and normalizing. You tell us your special technical requirements, and our engineer would evaluate it and send you professional offer.

SAE 4140 Equivalent Materials

Sometimes SAE 4140 is not avaiable, or you are looking for alternative option with low cost and quicker delivery time, it’s also important to know those equivalent of SAE 4140 steel material:

  • AISI 4140
  • EN19 (European Standard BS 970)
  • 42CrMo4 (European Standard EN 10083)
  • SCM440 (Japanese Standard JIS G4105)

Each of these equivalents maintains similar chemical compositions and mechanical properties. Generally the price of SAE 4140 is highest than other equivalents while 42CrMo4 is the grade which is easiest to get.

AISI 4140 vs SAE 4140: Understanding the Differences

While AISI 4140 and SAE 4140 are often used interchangeably, it’s important to understand their nuances.


Additional Information:

  • Delivery Time: Ready Stock
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Copper Nickel 70/30 Fasteners

Copper Nickel 70/30 Fasteners
  • Copper Nickel 70/30 Fasteners
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

Quantity Per PackYes
Gradeall grade
Surface FinishPolished

We are engaged in offering Quality Products to our clients. Our range of all products is widely appreciated by our clients.
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Ground Floor, 9/1947, Street No 3, Kailash Nagar
East Delhi, New Delhi - 110031, Delhi, India
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