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What is 1.4125 stainless steel equivalent to?

Dec 17, 2025

What is 1.4125 stainless steel?

1.4125 stainless steel is a high-carbon martensitic stainless steel, comparable in performance to the commonly used 440C stainless steel. After heat treatment, it exhibits excellent hardness, strength, and wear resistance, making it ideal for applications requiring both stainless steel properties and durability, such as knives, bearings, and cutting tools.

 

What is 1.4125 stainless steel equivalent to?

1.4125 stainless steel is the European (EN) designation for the well-known AISI 440C grade, also known as X105CrMo17, and is a high-carbon martensitic steel used for high hardness, wear resistance (knives, bearings, surgical tools). Its equivalents include UNS S44004, JIS SUS440C, and the common name 440C.

 

440C (1.4125) Chemical Composition

Grade C Mn P S Si Cr Mo
440C (1.4125) %0.95-1.20 %1.0 max %0.040 max %0.03 max %1.00 max

%16-18

%0.40-0.80

 

Physical Properties

Physical Property Value
Density 7.65 g/cm³
Thermal Expansion 10.1 x10^-6 /K
Modulus of Elasticity 200 GPa
Thermal Conductivity 24.2 W/m.K
Electrical Resistivity 0.6 x10^-6 Ω .m

 

ASTM 440C Stainless Steel Mechanical Properties:

Mechanical Property Value
Proof Stress 448-1900 MPa
Tensile Strength 758-2030 MPa
Elongation A50 mm 4-14 %

 

Is 1.4525 stainless steel magnetic?

Yes, 1.4525 stainless steel (also known as GX5CrNiCu16-4) is typically magnetic because it is a cast precipitation-hardening steel, belonging to the category of materials that are easily attracted to magnets (e.g., ferritic/martensitic or mixed types).


What is the hardness of 1.4525 stainless steel?

1.4525 stainless steel (also known as 15-5 PH or GX5CrNiCu16-4) is a precipitation-hardening grade that achieves significant hardness through heat treatment, with typical values ranging from around 40-44 HRC (Rockwell C) in common hardened conditions, but it can reach even higher, offering good strength and corrosion resistance for demanding applications like bearings.


What is the density of 1.4525 stainless steel?

The density of 1.4525 stainless steel (also known as GX5CrNiCu16-4) is consistently listed as 7.8 g/cm³ (grams per cubic centimeter) or 7800 kg/m³, a common value for this specific martensitic cast stainless steel alloy.

 

1.4525 Stainless Steel Price per kg
The price of 1.4125 stainless steel varies significantly depending on the shape (bars, plates, sheets), size, surface finish, and quantity. Typically, online prices for small bars/blanks range from approximately $25-80 and up, while large plates (e.g., 12x12 inches) can cost as much as $700-1600. Industrial bulk orders are priced per ton, with large quantity purchases typically costing $450-1000 or more per kilogram. Precision grinding or other special surface treatments will result in higher prices compared to rolled surface finishes. 

 

GNEE currently has 440C stainless steel products in stock, including: plates, sheets, coils, strips, tubes, bars, and wires. In addition, we offer a variety of surface finishes for you to choose from, such as: No.1, 2B, 2D, BA, No.3, No.4, HL, No.8, sandblasting, etc.
We guarantee 100% quality. We will never deliver any defective products to our customers. Please feel free to contact us to customize your required product specifications, including shape, condition, surface treatment, and processing techniques.

440C stainless steel


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