Superior Edge Retention and Wear Resistance 440 Stainless Steel Raw Material for Industrial Applications

Product Overview:

440C Stainless Steel is the highest-carbon martensitic stainless steel (1.0-1.1% C) with exceptional hardness, wear resistance, and edge retention. Containing 16-18% chromium, it achieves rockwell hardness up to 60 HRC after heat treatment, making it the ultimate choice for high-end cutting tools, bearings, and precision components. Renowned for its balance of corrosion resistance and extreme durability, 440C outperforms standard tool steels in demanding applications.

Key Physical Properties

• Chemical Composition: Cr (16-18%), C (1.0-1.1%), Mn (≤1%), Si (≤1%), Mo (0.75% max), Fe (Balance)

• Hardness (Annealed): 250-300 HB | Hardness (Hardened): 58-60 HRC

• Tensile Strength (Rm): 750-950 MPa (Annealed) | Up to 1900 MPa (Heat-Treated)

• Yield Strength (Rp0.2): 450-700 MPa (Annealed) | Up to 1650 MPa (Heat-Treated)

• Elongation (A5): 10-15% (Annealed) | 2-5% (Heat-Treated)

• Density: 7.7 g/cm³

Product Features:

1. Ultimate Hardness & Wear Resistance

   • Achieves 58-60 HRC after quenching and tempering, ideal for blades and components requiring razor-sharp edges.

   • Superior abrasion resistance compared to 440A/440B grades due to higher carbon content.

2. Moderate Corrosion Resistance

   • Chromium-rich composition resists tarnishing, oxidation, and mild chemicals (e.g., water, oils).

   • Not suitable for marine environments – pair with coatings for enhanced protection.

3. Precision Machinability

   • Easily ground, polished, or CNC-machined in annealed state; hardened post-processing for final durability.

   • Compatible with vacuum heat treatment to minimize decarburization.

4. Edge Retention & Fatigue Strength

   • Maintains sharpness under repetitive stress, perfect for surgical tools, bearings, and high-cycle components.

   • Resists micro-chipping in precision cutting applications.

5. Cost-Effective for High-Performance

   • Lower lifecycle costs than ceramic or carbide alternatives, with easier fabrication and repair.

Core Advantages:

• Industry-Leading Performance: Surpasses D2, M2, and 420 steels in hardness and wear resistance.
• Global Certifications: Complies with ASTM A276, A581, EN 10088, and JIS G4303 standards.
• Custom Fabrication: Available in bars, sheets, rods, and pre-hardened tool blanks.
• Fast Delivery: Bulk orders shipped globally within 10-15 days via air/sea freight.
• Technical Expertise: Free guidance on heat treatment, grinding, and application optimization.

Typical Applications:

• High-End Cutting Tools: Surgical scalpels, luxury knives, industrial blades, woodworking chisels.

• Precision Bearings: Ball bearings, roller bearings, aerospace bearing races.

• Medical Devices: Orthopedic instruments, dental drills, biopsy forceps.

• Industrial Components: Valve trim, pump shafts, mold inserts, measuring tools.

• Consumer Goods: Luxury watches, fishing hooks, high-end razors.

• Aerospace & Defense: Actuator components, firearm parts, turbine blade seals.

Why Choose Our 440C Stainless Steel?

• Premium Quality Control: Strict composition control and vacuum heat treatment ensure hardness consistency.
• Competitive Pricing: Direct factory pricing with 20-30% savings over intermediaries.
• Tailored Solutions: Custom heat treatment (annealing, cryogenic treatment) and precision grinding services.
• Eco-Friendly: Fully recyclable and RoHS-compliant.
• Quality Assurance: 100% hardness testing and 24-month warranty against material defects.

Quality Inspection:

Quality Management Department is establshed in the enterprise, which is responsible for the implementation of quallty management acrossall sectors, including QC, QA and implement and supervise various management system. The company reviews the Quality Manual byconducting management reviews annually to confirm its conformance, effectiveness and suitability.

Project Achievement

HENGLI Petrochemical 40 million / year ton of oil refining integration project	ZHEJIANG Petrochemical 40 million / year ton of oil refining integration project	LIANYUNGANG Petrochemical 3.2 million tons / young hydrocarbon comprehensive	YISHENG New Material The 6.6 million tons / year of the PTA project	CNOOC Huizhou Refining & Chemical Co Huilian Phase II, 22 million / year ton of oil refining Reconstruction and expansion project	Sinopec Zhenhai Refining & Chemical Company 1.2 million / year ton ethylene renovation and expansion project	Wanhua Chemical 480,000 tons / year bisphenol A integration project	GUANGXI Huayi New Materials Integration project of new chemical materials	CNOOC Shell The SMPO & POD project	China AtlantoShaanxi Coal Chemical Industry: 1.8 million tons / year ethylene glycol project
Hainan Huasheng 2.26 million tons / year non-photogamic polycarbonate project	Shenghong Refining The 16 million tons / year oil refining project	Anhui Haoyuan Chemical Industry 300,000 tons / year ethylene glycol project	Heilongjiang Longyou Petrochemical Company5.5 million tons / year heavy oil catalytic pyrolysis project	HuaLu Hengsheng 500,000 tons / year ethylene glycol project	Baofeng Energy600,000 tons / year methanol to olefin project	Jiangnan Shipyard (98000m³ liquefied ethane ship, etc.) Brand number: 316 / 316L, delivery time: 2020.12	Keppel shipyard in Singapore (FLNG ship) Brand number: 316 / 316L, delivery time: 2020.1	Guangzhou Wenchong Shipyard (Super double-phase steel desulfurization tower) Brand number: S32750 Delivery time: 2021.3	CSSC Dalian (FPSO, MV31, etc.) Brand number: 316L, etc., delivery date, 2019.8
725 Institute of China Shipbuilding Industry (Cu-Ni alloy Tube)	Nantong COCSO Shipyard (FSRU ship module)	CIMC Raffles (Drilling Rig)	CNOOC Orient 13-2 (Lined pipe)	CNOOC Bozhong 19-6 (Lined Pipe)	Petrobras MODEC FPSO (COSCO Shipping)	CNOOC Guangxi LNG, storage and transportation storage Brand number: 304 / 304L Specification: (8 "~32")×(3.76~9.53mm)	CNOOC Zhejiang LNG Phase II Brand number: 304 / 304L Specification: (6 "~28")×(7.11~10.31mm)	Sinopec Shandong LNG Phase II Brand number: 304 / 304L Specification: DN250 SCH10S	LIANYUNGANG Petrochemical A 4X160000m³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 813X12.7MM Delivery time: 2020.9
Sinopec Luoyang Institute Wenzhou LNG terminal Brand number: 304 / 304L Specification: 219.1~711X12.7MM Delivery time: 2022.3	Huatai Shengfu 160,000 m ³ low-temperature ethane storage tank Brand number: 304 / 304L Specification: 219~508X9.53MM	YAMAL LNG Brand number: 304 / 304L Specification: 406~914X9.53MM	Beijing Maiden Voyage	Oriental Hope	Sichuan Yongxiang 70,000 tons / year high purity polysilicon project	Xinjiang Daquan 25,000 tons / year high purity polysilicon project	Eagle Central China Paper Industry 500,000 tons of box board project	Guangxi Sun Paper 3.5 million tons of forest pulp and paper integration project	APP for Asian pulp and paper Chemical machine pulp and sewage treatment project
TCL Shenzhen Huaxing Optoelectronics semiconductor clean pipeline project	Beijing Daxing Airport	Hong Kong-Zhuhai-Macau/Macao Bridge Tubes used for stainless steel construction	CNNC Xiapu nuclear Power Plant Fast reactor demonstration project of CNNC 2.3	CONBA Stainless steel pipe for pharmaceutical engineering	Shenghong Refining Stainless steel associated heat pipe	Hangzhou Sewage Treatment Plant Stainless steel pipe for backwash purification unit	Qilu Pharmaceutical Fluid stainless steel pipe for raw material delivery	Zijin Mining Wet copper smelting, stainless steel sewage pipe	ect
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Certificate

API-5LD AUTHENTICATION	American Petroleum Institute API 5LC Certificate	ASME Certificate in the United States	EU PED&AD2000 certificate	ABS classification society certification certificate in the United States	DNV Det Norske Veritas Certificate	RINA Italian Bureau of Shipping Certificate	BV French Bureau of Shipping certification	LR Lloyd's Register Certificate of Approval	Customs Union EAC Certificate	Russian GOST certificate

Raw Material Vendors	Cooperation Partners

Packing and Shipping:

This peoduct is carefully packaged to ensure its safe delivery to you. It is wrapped in protective packaging material to prevent any scratches or damage during transit.

For shipping, we use trusted delivery services to make sure your product arrives promptly and in excellent condition. You can track your order to know exactly when it will reach you.

Elevate Your Products with 440 – The Gold Standard in High-Performance Steel!
From surgical instruments to aerospace components, 440 stainless steel delivers unmatched precision and longevity. Request a quote today – transform your designs with steel engineered to exceed expectations!