InduSteel Seamless tube,CREUSABRO® 4800 Advanced Technology in Wear Steel Seamless tube

InduSteel Seamless tube CREUSABRO® 4800 Advanced Technology in Wear Steel Seamless tube Product Information -:- For detailed product information, please contact sales. -: InduSteel Seamless tube CREUSABRO® 4800 Advanced Technology in Wear Steel Seamless tube Synonyms -:- For detailed product information, please contact sales. -:

Industeel CREUSABRO® 4800 Advanced Technology in Wear Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Datasheet: Industeel CREUSABRO® 4800 Advanced Wear Steel** ## **1. Product Overview** **CREUSABRO® 4800** represents the pinnacle of advanced work-hardening wear steel technology from Industeel (ArcelorMittal), engineered for applications where **extreme abrasion resistance must coexist with exceptional impact toughness and superior weldability**. Building upon the patented CREUSABRO® metallurgical platform, the 4800 grade delivers a unique combination of **very high initial hardness (480 HBW) with extraordinary work-hardening capacity**, allowing surface hardness to increase significantly under operational impact. This "self-reinforcing" characteristic creates a dynamically adapting wear surface that outperforms conventional static-hardness steels in severe combined impact/abrasion environments, while maintaining fabrication-friendly properties uncommon in materials of this hardness class. ## **2. International Standards & Designations** | System/Authority | Designation | Specification Title / Relationship | | :--- | :--- | :--- | | **Manufacturer** | **Industeel CREUSABRO® 4800** | Proprietary brand name, trademark of ArcelorMittal | | **Hardness Class** | **480 HBW Nominal** | Minimum as-delivered hardness specification | | **Common Names** | CREUSABRO 4800, Advanced Work-Hardening Wear Plate, Premium Abrasion-Resistant Steel | **Note:** As a proprietary advanced technology product, CREUSABRO® 4800 does not have direct equivalents in standard specifications like EN or ASTM. It is typically supplied against the manufacturer's proprietary technical delivery conditions, which often reference or exceed the mechanical requirements of grades like **EN 10025-6 S1300Q** or **ASTM A514 Gr. 130 [ksi]** for strength, while incorporating specific wear and toughness guarantees. ## **3. Chemical Composition (% by Weight)** The chemistry is a sophisticated, balanced alloy system designed to produce a high-hardness martensitic matrix with optimal precipitate distribution for work-hardening behavior. | Element | Typical CREUSABRO® 4800 Range | Metallurgical Function & Rationale | | :--- | :--- | :--- | | **Carbon (C)** | **0.15 - 0.25** | Higher than 4000 grade for increased as-delivered hardness and carbide volume, while remaining controlled for weldability. | | **Manganese (Mn)** | **1.20 - 1.80** | Critical for solid solution strengthening, austenite stability, and hardenability. Prevents brittle martensite formation. | | **Phosphorus (P)** | **≤ 0.015** | Ultra-low to eliminate temper embrittlement risks. | | **Sulfur (S)** | **≤ 0.003** | Extremely low for maximum transverse ductility, impact toughness, and weld integrity. | | **Silicon (Si)** | **≤ 0.50** | Deoxidizer and solid solution strengthener. | | **Chromium (Cr)** | **1.50 - 2.20** | Primary carbide former (M₇C₃, M₂₃C₆); significantly increases hardenability, wear resistance, and corrosion/oxidation resistance. | | **Molybdenum (Mo)** | **0.40 - 0.80** | Potent hardenability agent; promotes fine secondary carbides (Mo₂C) for precipitation strengthening and enhances high-temperature strength. | | **Nickel (Ni)** | **≤ 1.20** | **Crucial toughness element:** Lowers ductile-brittle transition temperature dramatically, enabling high impact resistance at very high hardness. | | **Boron (B)** | **≤ 0.004** (Trace) | Powerful hardenability multiplier, allowing a leaner overall alloy design for better toughness. | | **Niobium (Nb)** | **≤ 0.06** | **Key microalloy:** Forms fine, stable Nb(C,N) precipitates for intense grain refinement and precipitation strengthening. | | **Vanadium (V)** | **≤ 0.10** (Optional) | Contributes to secondary hardening via V₄C₃ precipitation; enhances wear resistance. | | **Titanium (Ti)** | **≤ 0.025** | Added for nitride formation (TiN) to protect boron and provide additional grain boundary pinning. | | **Iron (Fe)** | Balance | Matrix. | **Advanced Metallurgical Principle:** The steel is supplied in a **quenched and low-temperature tempered condition**. Its microstructure consists of a **very fine, high-carbon martensitic lath structure** with a controlled amount of **retained austenite** and a uniform dispersion of **primary and secondary carbides** (Cr-rich carbides, NbC, Mo₂C). Under impact or severe compressive stress in service, the **retained austenite transforms to martensite (TRIP effect)**, and intense dislocation activity around the hard precipitates leads to massive **work hardening**, pushing surface hardness to **550+ HBW**. ## **4. Mechanical & Physical Properties** | Property | As-Delivered Condition (Typical) | Service-Hardened Surface (Typical) | Test Standard / Notes | | :--- | :--- | :--- | :--- | | **Nominal Hardness** | **480 - 530 HBW** | **550 - 600+ HBW** | EN ISO 6506-1 | | **Yield Strength (Rp0.2)** | **≥ 1300 MPa (≥ 188 ksi)** | Increases significantly | EN ISO 6892-1 | | **Tensile Strength (Rm)** | **1450 - 1650 MPa (210 - 239 ksi)** | Increases significantly | EN ISO 6892-1 | | **Elongation (A₅)** | **≥ 10%** | Localized surface decrease | EN ISO 6892-1 | | **Impact Toughness (Charpy V-notch)** | **≥ 30 J at 20°C**
**≥ 15 J at -40°C** | Core properties remain high | EN ISO 148-1; **Exceptional for this hardness** | | **Bend Test** | Bend to 180° over mandrel **t ≤ 2.0 * t** (plate thickness) | -- | EN ISO 7438 (Indicates good residual ductility) | | **Modulus of Elasticity (E)** | **~210 GPa** | -- | -- | | **Density** | **7.85 g/cm³** | -- | -- | | **Abrasion Resistance** (Relative Loss) | **Index: ~1.5-1.8** (vs. 400 HB Ref.) | **Index: >2.0** (vs. 400 HB Ref.) | ASTM G65 (Dry Sand/Rubber Wheel) or equivalent. **Dramatically superior.** | | **Work-Hardening Depth** | -- | **Significant** (several millimeters) | Dependent on impact energy/service conditions | ## **5. Key Characteristics & Advantages** * **Ultimate Wear Performance:** Offers the highest tier of abrasion resistance in the CREUSABRO® family, with **dynamically increasing surface hardness** under impact, leading to service life extensions of **200-300% or more** compared to standard 500 HB static-hardness steels in high-impact applications. * **Unmatched Toughness-Hardness Combination:** Delivers impact toughness levels typically associated with 400 HB steels, but at 480+ HBW hardness. This **virtually eliminates the risk of catastrophic brittle fracture** common in high-hardness materials. * **Superior Resistance to Deformation & Indentation:** Extremely high yield strength prevents plastic flow and groove formation under extreme point loads. * **Good Weldability (for its class):** While requiring strict procedures, it can be reliably welded and repaired in the field—a critical advantage over non-weldable cast alternatives. * **Excellent Impact Fatigue Resistance:** Withstands repeated heavy impacts without spalling or crack initiation. * **Broad Service Temperature Range:** Maintains good properties from **-40°C to +250°C**. ## **6. Primary Applications** Designed for the world's most severe wear applications where cost-per-ton of material moved is the ultimate metric. * **Mining - Extreme Duty:** **Primary crusher mantles/concaves (secondary applications), dump truck body liners** (high impact zones), **loader buckets** (for hard rock), **shovel dippers, chute liners** under large rock impact, **screening applications** with heavy blinding. * **Quarrying & Aggregates:** **Crusher rotor tips, anvils, and feed tubes** for vertical shaft impactors (VSIs), **hammer mill hammers** for abrasive stone. * **Construction & Demolition:** **Crusher jaws** for reinforced concrete, **demolition shear** wear plates, **tunnel boring machine** cutter rings and wear plates. * **Cement Industry:** **Raw mill hammer crusher** components, **clinker crusher hammers**, **fan blades** in high-ash environments. * **Steel Industry:** **Slag pot liners, skid pipes** in pelletizing plants, **wear plates** in sinter plants. * **Power Generation - Severe Service:** **Bottom ash conveyor screws, pulverizer** wear parts for highly abrasive fuels. ## **7. Fabrication & Welding Guidelines** * **Cutting:** **Plasma cutting** (preferred) or **abrasive waterjet cutting**. **Oxy-fuel cutting is NOT recommended** due to extreme risk of hardening and cracking; if unavoidable, requires special high-temperature preheat (>250°C) and post-heat slow cooling. * **Drilling/Machining:** **Carbide tooling is mandatory.** Use slow speeds, heavy feeds, and rigid setups. Pre-drilling for bolts is required. * **Bending/Cold Forming:** **Very limited.** Hot forming is strongly recommended for any significant bending. * **Welding (Requires Expert Procedure):** * **Preheat:** **Mandatory and Critical.** **250-300°C minimum.** Maintain interpass temperature. * **Filler Metal:** Use **tough, ductile, undermatching electrodes** (~600-800 MPa yield). Common choice: basic low-hydrogen electrodes like **AWS E11018M** or specially formulated wear-grade wires (e.g., containing 1-3% Ni). * **Heat Input:** Control strictly to **1.0 - 1.8 kJ/mm.** * **Post-Weld Heat Treatment (PWHT):** **Highly Recommended.** Stress relieve at **550-600°C for 1-2 hours** and furnace cool. This is crucial for preventing hydrogen-induced cracking (HIC) and stress corrosion cracking in the HAZ. * **Buttering:** Use a buttering layer of softer weld metal on edges before welding to dissimilar steels (e.g., mild steel frames). ## **8. Comparative Performance** | Scenario | **CREUSABRO® 4800** | Standard 500 HB Q&T Steel | High-Chromium White Cast Iron (27% Cr) | | :--- | :--- | :--- | :--- | | **As-Delivered Hardness** | 480-530 HBW | 500-550 HBW | 600-750 HV (Harder) | | **Hardness After Impact** | **550-600+ HBW** | ~500-550 HBW | 600-750 HV (Static) | | **Impact Toughness** | **High (30J+)** | Low (5-15J) | **Very Low (<5J) - Brittle** | | **Weldability/Repairability** | **Good (with procedure)** | Poor/Difficult | **Not Weldable** | | **Optimal Service** | **Severe Impact + Extreme Abrasion** | **Moderate Impact / High Abrasion** | **Pure Abrasion / No Impact** | | **Failure Mode** | Gradual, predictable wear | Sudden spalling or cracking | **Catastrophic fracture** | --- **Disclaimer:** This datasheet describes the advanced technology product **Industeel CREUSABRO® 4800**. **CREUSABRO® is a registered trademark of ArcelorMittal.** The exceptional performance, particularly the work-hardening effect, is dependent on specific in-service mechanical activation (impact stress). This is a **premium material** whose successful application requires **expert engineering** in selection, design (avoiding stress concentrators), and **specialized fabrication techniques**. Consultation with **Industeel's technical service team is essential** prior to specification and fabrication planning. All welding must be performed by qualified personnel using qualified procedures specific to this grade. -:- For detailed product information, please contact sales. -: Industeel CREUSABRO® 4800 Advanced Technology in Wear Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6429 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 CREUSABRO® 4800 Advanced Technology in Wear Steel Properties -:- For detailed product information, please contact sales. -:

Applications of InduSteel Seamless tube CREUSABRO® 4800 Advanced Technology in Wear Steel Seamless tube -:- For detailed product information, please contact sales. -: Chemical Identifiers InduSteel Seamless tube CREUSABRO® 4800 Advanced Technology in Wear Steel Seamless tube -:- For detailed product information, please contact sales. -:

Packing of InduSteel Seamless tube CREUSABRO® 4800 Advanced Technology in Wear Steel Seamless 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 Seamless 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 2900 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