Schmolz + Bickenbach,Cryodur® 2510 (O-1) Cold Work Die Steel Rod/Bar

Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Rod Product Information -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Rod Synonyms -:- For detailed product information, please contact sales. -:

Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Product Information -:- For detailed product information, please contact sales. -: # **Schmolz + Bickenbach Cryodur® 2510 (O-1) - Oil-Hardening Cold Work Tool Steel** ## **Overview** Cryodur® 2510 is a premium oil-hardening, non-shrinking cold work tool steel produced by Schmolz + Bickenbach. Corresponding to the classic AISI O1 grade, this steel is renowned for its **excellent dimensional stability**, **good machinability**, and **minimal distortion** during heat treatment. It represents a balanced, cost-effective solution for applications requiring high precision and moderate wear resistance. ## **Key Characteristics** - **Minimal Distortion:** Exhibits exceptionally low dimensional changes during oil quenching - **Superior Machinability:** Excellent machining properties in annealed condition - **Good Wear Resistance:** Suitable for medium-duty applications - **Uniform Hardness:** Consistent through-hardening characteristics - **Cost-Effective:** Economical choice for many tooling applications ## **International Standard Designations** | Standard | Designation | |----------|-------------| | **AISI** | O1 | | **DIN/W-Nr.** | 1.2510 | | **EN** | 80MnCrV8-6-4 | | **JIS** | SKS3 | | **ISO** | 95MnWCr5 | | **UNS** | T31501 | | **GB (China)** | 9Mn2V | ## **Chemical Composition (%)** | Element | Min | Max | Typical | |---------|-----|-----|---------| | **Carbon (C)** | 0.85 | 0.95 | 0.90 | | **Manganese (Mn)** | 1.00 | 1.20 | 1.10 | | **Chromium (Cr)** | 0.40 | 0.60 | 0.50 | | **Tungsten (W)** | 0.40 | 0.60 | 0.50 | | **Vanadium (V)** | 0.07 | 0.12 | 0.10 | | **Silicon (Si)** | 0.10 | 0.35 | 0.25 | | *Iron (Fe)* | *Balance* | | | ## **Physical Properties** | Property | Value | Conditions | |----------|-------|------------| | **Density** | 7.83 g/cm³ | At 20°C | | **Thermal Conductivity** | 46.0 W/(m·K) | At 20°C | | **Specific Heat Capacity** | 460 J/(kg·K) | At 20°C | | **Coefficient of Thermal Expansion** | 11.5 × 10⁻⁶/K | 20-200°C | | **Elastic Modulus** | 210 GPa | At 20°C | | **Electrical Resistivity** | 0.30 μΩ·m | At 20°C | ## **Mechanical Properties** ### **Annealed Condition** - **Hardness:** 190-230 HB - **Tensile Strength:** 650-800 MPa - **Yield Strength:** ≥ 400 MPa - **Elongation:** ~20% ### **Hardened & Tempered Condition** - **Typical Working Hardness:** 58-62 HRC - **Compressive Strength:** 2,400-2,800 MPa (at 60 HRC) - **Impact Toughness:** 15-25 J (Charpy, at 60 HRC) ## **Heat Treatment Guidelines** ### **Annealing** - **Temperature:** 680-720°C - **Cooling:** Slow furnace cooling at 10-20°C/hour to 600°C, then air cool - **Resulting Hardness:** ≤ 230 HB ### **Stress Relieving** - **Temperature:** 600-650°C - **Cooling:** Air cool - **Hardness Reduction:** ~30 HB ### **Hardening** 1. **Preheating:** 550-600°C (equalize thoroughly) 2. **Austenitizing:** 780-820°C (typically 800°C) 3. **Soaking Time:** 20-30 minutes per inch of thickness 4. **Quenching:** In circulating oil at 40-60°C 5. **Quench Delay:** Immediately after reaching austenitizing temperature ### **Tempering** - **Temperature Range:** 150-250°C for working hardness of 58-62 HRC - **Hold Time:** 1-2 hours per inch of thickness (minimum 1 hour) - **Cycles:** Double tempering recommended ### **Temperature vs Hardness Relationship** | Tempering Temperature | Resulting Hardness (HRC) | |-----------------------|---------------------------| | 150°C | 62-64 | | 200°C | 60-62 | | 250°C | 58-60 | | 300°C | 56-58 | ## **Typical Applications** ### **Cutting Tools** - **Blank & Piercing Dies:** For sheet metal up to 6mm thickness - **Shear Blades:** Industrial cutting blades - **Slitter Knives:** For paper, plastic, and thin metals - **Cut-off Tools:** Lathe and machining center tools ### **Forming Tools** - **Bending Tools:** Press brake tools and dies - **Forming Dies:** For moderate production runs - **Drawing Dies:** For shallow to medium drawing operations ### **Measuring & Precision Tools** - **Gauges:** Plug gauges, ring gauges, thread gauges - **Fixtures:** Precision jigs and fixtures - **Machine Parts:** Wear-resistant machine components ### **Woodworking Tools** - **Knives:** Planer knives, chipper knives - **Cutters:** Profile cutters, router bits ## **Machinability** - **Turning & Milling:** Excellent in annealed condition - **Grinding:** Good, but requires proper wheel selection - **EDM:** Suitable with standard parameters - **Polishing:** Achieves excellent surface finish ## **Surface Treatments** Cryodur® 2510 responds well to various surface enhancement processes: - **Nitriding:** Increases surface hardness to 900-1100 HV - **Chrome Plating:** Improves corrosion resistance and release properties - **TiN/TiCN Coatings:** Further enhances wear resistance - **Black Oxide:** Provides mild corrosion protection ## **Comparison with Other Grades** | Property | Cryodur® 2510 (O1) | Cryodur® 2379 (D2) | Cryodur® 2080 (A2) | |----------|---------------------|---------------------|---------------------| | **Hardening Method** | Oil | Air/Oil | Air | | **Wear Resistance** | Moderate | Very High | High | | **Toughness** | Good | Moderate | Good | | **Distortion** | Very Low | Low | Very Low | | **Machinability** | Excellent | Fair | Good | | **Cost** | Low | High | Medium | ## **Availability** Cryodur® 2510 is available in various forms: - **Bars:** Round, square, and flat bars - **Blocks:** For die-making applications - **Pre-finished Material:** Precision ground stock - **Custom Shapes:** Forged to customer specifications ## **Technical Notes** 1. **Safety Precautions:** Always use proper PPE during heat treatment operations 2. **Decarburization:** Protect surface during heat treatment to prevent decarburization 3. **Storage:** Store in dry conditions to prevent corrosion 4. **Regrinding:** Remove all heat-affected zones after welding operations ## **Disclaimer** This technical information is provided for guidance only. For specific applications, always consult Schmolz + Bickenbach's official technical data sheets and involve qualified metallurgical engineers. Actual properties may vary based on specific heat treatment parameters, section size, and manufacturing processes. -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7140 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. -: Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Rod -:- For detailed product information, please contact sales. -: Chemical Identifiers Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Rod -:- For detailed product information, please contact sales. -:

Packing of Schmolz + Bickenbach Cryodur® 2510 (O-1) Cold Work Die Steel Rod -:- 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 Rod 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 3611 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