Sichuan Liaofu Special Steel Industry Co., Ltd has made significant progress in the production of high-quality steel products. One of our main products is the 1.2379 and d2 K110 K100 1.2344 1.2343 steel
K110 steel (equivalent to German standard 1.2379 and corresponding to AISI D3) is a high wear-resistant cold work tool steel containing 1.50%–1.70% carbon and 11.0%–13.0% chromium. It is refined using vacuum melting and Electro-Slag Remelting (ESR) to eliminate inclusions, achieving a carbide uniformity grade of ≥9 according to GB/T 18254. After quenching, it can reach a hardness of HRC 58–62. Combining excellent wear resistance with strong chipping resistance, it is well-suited for manufacturing precision molds, cutting tools, and high-strength structural components used in demanding applications.
Standard stock forms:
Round bars: Φ10 mm–Φ300 mm (tolerance h11)
Plates: Thickness 5 mm–200 mm (flatness ≤ 0.3 mm/m)
Modules: Pre-machined shaped parts (can be cut to JIS/SKD standard sizes)
We support 48-hour sample production, 35-day delivery for bulk orders, and expedited heat treatment arranged within 10 days for urgent orders.
Material
Product Application Areas:Precision Mold Manufacturing Core Advantages: High hardness (HRC 58–62), carbide uniformity ≥ grade 9 (GB/T 18254), quenching deformation rate ≤ 0.05% Stamping Dies: Used for automotive panel stamping dies and silicon steel sheet punching dies (die life doubled, up to 800,000 cycles without edge chipping) Drawing Dies: Used for stainless steel tableware drawing dies and aluminum alloy wheel forming dies (anti-adhesive wear capacity increased by 40%, reducing die maintenance frequency) Injection Molds: For acrylic/ABS plastic high-gloss molds (mirror polishing achieves Ra ≤ 0.1 μm, meeting surface precision requirements for high-end products)
Cutting Tools & Workholding Cutting Tools: Substrates for cemented carbide tools and high-speed steel composite tools (suitable for precision machining of hard-to-process materials such as quenched steel and superalloys) Workholding Fixtures: Heat treatment fixtures (oxidation resistance up to 400℃), gear machining fixtures (dimensional stability ensures processing accuracy) Gauges & Measuring Tools: Precision gauge blocks and plug gauges (accuracy retention ≥ 95% after long-term use)
Automotive Parts Manufacturing Cold-Formed Components: High-strength bolts for suspension systems, cold forging dies for engine brackets (supports 30% cold deformation, reducing the risk of work-hardening cracks) Wear-Resistant Parts: Transmission synchronizer rings, brake system caliper dies (salt spray test ≥ 1000 hours, suitable for humid and salt spray environments) New Energy Vehicles: Stamping dies for motor silicon steel sheets (adapted for processing ultra-thin 0.3 mm silicon steel, burr height ≤ 0.01 mm)
Chemical & Corrosion-Resistant Equipment Pump & Valve Seals: Mechanical seal rings and ball valve seats resistant to dilute sulfuric acid (≤ 30% at 60℃) and neutral salt solutions (5% NaCl) Anti-Corrosion Structures: Flanges for seawater desalination equipment, chemical pipeline supports (after TD coating, chloride ion corrosion resistance increased threefold) High-Temperature Components: Support parts for heat treatment furnaces below 400℃ (high-temperature tempering stability ensures dimensional stability)
Hardware & Furniture Processing Hardware Molds: Molds for drawer slide rails and hinge stamping (post-machining quenching process adapts to complex curved designs) High-End Furniture Components: Molds for solid wood connectors and metal decorative parts drawing (finished product accuracy error ≤ 0.02 mm, improving assembly efficiency) Surface Treatment Tools: Electroplating fixtures and spraying jigs (wear resistance ensures long-term accuracy)
Structural Components for Special Working Conditions Low-Temperature Environments: Valve parts used below –40℃ (impact toughness ≥ 15 J/cm², resistant to low-temperature brittle fracture) High-Load Scenarios: Wear-resistant liners for mining machinery, injection molding machine screw supports (bending strength ≥ 2500 MPa, reducing fracture risk) High-Precision Instruments: Molds for aerospace precision gearbox housings (dimensional deviation ±0.01 mm, meeting aviation-grade accuracy requirements)
DIN 1.2379 steel sheet K110 steel plate and K110 steel bar below ✅ Advantages in Machinability: Annealed hardness HB ≤ 255, machinability index ≥ 45% (taking steel 45 as 100%), recommended to use WC-Co cemented carbide tools, cutting speed 15–25 m/min Carbide particle size ≤ 5 μm, grinding surface roughness Ra ≤ 0.2 μm, grinding wheel consumption reduced by 30% compared to similar steels Quenching deformation rate ≤ 0.05% (for 500 mm size), suitable for precision progressive die and deep drawing mold processing ✅ Surface Treatment Compatibility: Supports TD coating (VC coating, hardness HV3200), PVD titanium plating (TiN, thickness 2–5 μm), film life ≥ 1000 hours under neutral salt spray test (NSS), significantly improving mold resistance to adhesive wear. Machining Data Comparison:
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