InduSteel Tube,Pipe,CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Tube,Pipe

InduSteel Tube CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Tube Product Information -:- For detailed product information, please contact sales. -: InduSteel Tube CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Tube Synonyms -:- For detailed product information, please contact sales. -:

Industeel CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: Industeel CLC 1.2316 Prehardened Corrosion-Resistant Mold Steel** ## **1. Overview** **Industeel CLC 1.2316** is a premium **prehardened, martensitic stainless mold steel** designed for plastic injection molds requiring exceptional corrosion resistance combined with excellent polishability and machinability. Supplied in a **quenched and tempered (prehardened) condition** with a hardness of approximately **300 HB (31-33 HRC)**, this steel is the industry-standard choice for molding corrosive plastics, medical devices, optical components, and food-contact applications. Its high chromium content (approx. 16%) provides superior resistance to rust and chemical attack from cooling water, moisture, and acidic plastic decomposition products. The **CLC (Cleanliness and Consistency)** quality designation ensures an ultra-homogeneous microstructure with minimal non-metallic inclusions, enabling flawless mirror polishing and perfect texture reproduction, making it the material of choice for high-gloss and textured surfaces. ## **2. International Standards & Specifications** This material meets and exceeds the leading international standards for corrosion-resistant prehardened mold steels. * **Primary Standard:** * **DIN 1.2316 / EN ISO 4957 X36CrMo17:** The defining European standard for corrosion-resistant plastic mold steel. * **Key International Equivalents:** * **AISI 420 Modified (with Mo):** American equivalent, though 1.2316 is more precisely defined. * **JIS G4404 SUS420J2 Modified:** Japanese stainless mold steel grade. * **GB/T 1299 4Cr13MoV:** Chinese national standard. * **Common Trade Names:** Often marketed as **M300, 1.2316, or Stainless P20+**. * **Manufacturer's Designation:** * **Industeel CLC 1.2316:** The proprietary designation indicating **CLC (Cleanliness and Consistency)** quality, guaranteeing superior internal purity, uniform hardness distribution, and isotropic properties crucial for precision mold making. ## **3. Chemical Composition (Weight %, per DIN 1.2316)** The composition is optimized for a balance of corrosion resistance, hardenability, and polishability. | Element | Composition Range (%) | Role & Benefit | |---------|----------------------|----------------| | **Carbon (C)** | 0.33 – 0.40 | Provides base strength and hardness after heat treatment, while remaining low enough to maintain good toughness and corrosion resistance. | | **Chromium (Cr)** | 15.50 – 17.50 | **The primary corrosion-resisting element.** Forms a dense, passive chromium oxide (Cr₂O₃) layer that provides excellent resistance to rust and chemical attack from plastics, moisture, and standard mold release agents. | | **Molybdenum (Mo)** | 1.00 – 1.30 | **Critical addition.** Dramatically enhances **pitting corrosion resistance**, improves hardenability (especially in thicker sections), and increases toughness and strength. | | **Vanadium (V)** | ≤ 0.10 | Added in small amounts for grain refinement. | | **Manganese (Mn)** | ≤ 1.00 | Aids in deoxidation and hot workability. | | **Silicon (Si)** | ≤ 0.40 | Deoxidizer. | | **Sulfur (S)** | **≤ 0.001 (Ultra-Low)** | **Key to polishability.** Kept at an extremely low level to eliminate sulfide inclusions (MnS), which are the primary defect causing pits and streaks during high-grade polishing. This is essential for achieving SPI A1 mirror finishes. | | **Nickel (Ni)** | May be present in small amounts (~0.5%) in some specifications to improve toughness. | ## **4. Typical Physical & Mechanical Properties (As Prehardened)** * **Delivery Condition:** Quenched and tempered at the mill, ready for machining. * **Hardness:** **290 – 320 HB (31 – 33 HRC)** – Uniform throughout large cross-sections. * **Tensile Strength:** 1000 – 1150 MPa (145,000 – 167,000 psi) * **Yield Strength (0.2% Offset):** 850 – 950 MPa (123,000 – 138,000 psi) * **Elongation:** ≥ 10% (in 50mm) * **Impact Toughness (Charpy V-Notch):** ≥ 20 J (15 ft-lb) at room temperature. * **Corrosion Resistance:** **Excellent.** Far superior to P20-type (1.2311) and 420-type (1.2083) steels. Resists rust from condensation, cooling water (including chlorinated water), and acidic by-products from plastics like PVC, flame-retardant ABS, and polyacetals. * **Polishability:** **Exceptional.** The CLC quality and ultra-low sulfur content allow for the achievement of **flawless mirror finishes (SPI #A1)** and perfect replication of fine-etched textures (VDI 3400). * **Machinability:** **Good.** Comparable to or slightly lower than 1.2311 due to its higher strength and alloy content, but still offers very good performance in the prehardened state. * **Weldability:** **Good to Very Good.** Can be repaired using matching or over-alloyed stainless filler metals with proper pre-heat (200-300°C) and post-weld heat treatment procedures. * **Physical Properties:** * **Density:** 7.78 g/cm³ * **Thermal Conductivity:** ~ 25 W/m·K (at 20°C) – Lower than 1.2311. * **Coefficient of Thermal Expansion:** ~ 10.8 × 10⁻⁶/°C (20–100°C) ## **5. Product Application** CLC 1.2316 is the premier choice for molds where surface quality and corrosion resistance are non-negotiable. * **Optical and Lens Molds:** For cameras, eyewear, LED components, and light guides requiring flawless optical surfaces. * **Medical Device Molds:** For syringes, implants, diagnostic equipment, and housings where sterilization, cleanability, and absence of corrosion are mandatory. * **Molds for Corrosive Plastics:** * **Polyvinyl Chloride (PVC)** * **Flame-Retardant (FR) compounds** containing halogen or phosphorus. * **Polyacetals (POM)** that release formic acid. * **Food Packaging and Consumer Electronics Molds:** For components requiring high-gloss finishes (Class A surfaces) and hygiene. * **Molds for Engineering Plastics** in humid or challenging workshop environments. ## **6. Key Features & Advantages of CLC Quality** * **Superior Corrosion Resistance:** The high Cr and Mo content provides the best-in-class protection against rust and chemical attack in molding environments, drastically reducing maintenance and extending mold life. * **Unmatched Polishability and Texture Transfer:** The ultra-clean, homogeneous CLC microstructure is the foundation for achieving perfect mirror finishes and sharp texture definition. * **Excellent Dimensional Stability:** Minimal distortion during machining ensures accuracy for high-precision molds. * **Good Machinability in Prehardened State:** Allows for efficient machining of complex geometries directly from the delivered block. * **Through-Hardening Capability:** Can be re-hardened (if needed for specific components) to achieve higher hardness (up to ~52 HRC) for enhanced wear resistance. * **Good Nitriding Response:** Can be surface hardened via gas or plasma nitriding to further increase surface hardness and wear resistance without compromising corrosion resistance. * **Consistent Isotropic Properties:** Guaranteed uniform performance in all directions, critical for predictable mold behavior. ## **7. Processing Guidelines** * **Machining:** Use sharp carbide tools. Its machinability is good, but slightly more demanding than 1.2311 due to higher strength. Adequate cooling is recommended. * **Polishing:** Follow standard sequential abrasive steps. The material's cleanliness allows for efficient progression to the highest grades. * **Heat Treatment (if required):** For final hardening: Austenitize at 1020-1050°C, quench in oil or air, and temper at 250-550°C to desired hardness. **Vacuum or protective atmosphere treatment is strongly recommended** to prevent decarburization. * **Welding:** Use matching (e.g., 1.2316) or overalloyed stainless filler metals (e.g., 1.2357/AWS ER316L-Si). Apply pre-heat and post-weld tempering at 450-500°C. * **Storage:** Apply rust-preventive oil on machined surfaces during storage to maintain the passive layer. **Summary:** Industeel CLC 1.2316 is the definitive high-performance stainless mold steel for applications demanding the perfect synergy of corrosion resistance and surface finish quality. Its CLC quality elevates the standard 1.2316 grade by ensuring unparalleled internal cleanliness and consistency, directly translating to reliable performance, stunning surface results, and extended service life in the most demanding molding environments. For molders producing optical, medical, corrosive plastic, or high-gloss consumer components, it represents a benchmark material that minimizes risk and maximizes part quality. -:- For detailed product information, please contact sales. -: Industeel CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7043 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Industeel CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Properties -:- For detailed product information, please contact sales. -:

Applications of InduSteel Tube CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Tube -:- For detailed product information, please contact sales. -: Chemical Identifiers InduSteel Tube CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Tube -:- For detailed product information, please contact sales. -:

Packing of InduSteel Tube CLC 1.2316 Prehardened (300HB) and Corrosion Resistant Mold Steel Tube -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Tube drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3514 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition