440C Stainless Steel Cold Rolled Plate in Stock

If you're looking for high-strength, wear-resistant stainless steel plate that can withstand heavy mechanical loads and offers excellent polishing properties, 440C cold-rolled stainless steel plate is your best choice.
Gnee offers a ready supply of AISI 440C / UNS S44004 stainless steel plate that complies with ASTM A240 and EN 10088 standards, along with mill test certificates (EN 10204 3.1) and global shipping. 440C high-carbon martensitic stainless steel plate is particularly suitable for bearing components, molds, cutting tools, and valve parts, which require extreme hardness and corrosion resistance after heat treatment.

 

Our products: 440C SS Cold Rolled Plate, 440C SS Cold Rolled Sheet, 440C SS Embossed Plate, 440C SS Flat Plate, 440C SS Heat Treated Plate, 440C SS Hot Rolled Plate, 440C SS Hot Rolled Sheet, 440C SS Perforated Plate, 440C SS Rolled Plate, 440C SS Welded Plate

440C Stainless Steel Cold Rolled Plate Specification

Category	Specification
Standard	ASTM A240 / ASME SA240 / EN 10088-2
Grade	AISI 440C / UNS S44004 / 1.4125
Type	Martensitic Stainless Steel
Process	Cold Rolled, Annealed or Hardened & Tempered
Chemical Composition (% by weight)	C: 0.95–1.20, Cr: 16.0–18.0, Mn: ≤1.0, Si: ≤1.0, Mo: ≤0.75, P: ≤0.04, S: ≤0.03
Hardness (HRC)	Up to 60 HRC after heat treatment
Tensile Strength (MPa)	760 – 1860 MPa (depending on condition)
Yield Strength (MPa)	450 – 1600 MPa
Elongation (%)	12 – 20
Density	7.74 g/cm³
Melting Range	1480 – 1530°C
Plate Thickness	0.5 mm – 20 mm
Width	1000 mm – 2000 mm
Length	2000 mm – 6000 mm (custom sizes available)
Surface Finish	2B, BA, No.4, Mirror, or Custom Polished
Packaging	Seaworthy wooden crate, anti-rust wrapping
Certification	EN 10204 3.1 / 3.2 available

 

Applications of 440C Stainless Steel Cold Rolled Plate

Bearing rings and balls

Injection molds and dies

Surgical instruments and cutting blades

Gauge blocks and measuring tools

Valve components and pump shafts

Aerospace hardware and automotive parts

 
What is the difference between 440A, 440B, and 440C stainless steel?

The main difference lies in carbon content:

440A has lower carbon, offering better corrosion resistance but lower hardness.

440B is balanced between hardness and corrosion resistance.

440C has the highest carbon (≈1.1%), giving it superior hardness and wear resistance.

Can 440C be welded?

Weldability is limited. Preheating and post-weld tempering are required to prevent cracking. For welded structures, 420 or 410 grades may be more suitable.

Is 440C magnetic?

Yes. 440C is magnetic in all conditions due to its martensitic structure.

 

What is the price of 440C stainless steel plate per ton?

Prices vary depending on thickness, size, and surface finish. As of the current market, 440C cold rolled plate price ranges from USD 3,800 – 4,600 per ton (CIF) for standard sizes. Contact Gnee for an accurate quotation. Email: sales@gneestainless.com

 

Why Choose Gnee as Your 440C Stainless Steel Supplier?

✅ Ready stock of cold rolled 440C stainless steel plates in standard sizes

✅ ISO 9001, SGS, and BV certified production and full traceability

✅ Over 18 years of export experience serving 60+ countries

✅ Custom cutting, polishing, and machining available

✅ Competitive prices (CIF, FOB, EXW) and 7–10 days fast delivery

✅ Professional export packaging with seaworthy wooden pallets and anti-rust wrapping