Schmolz + Bickenbach,Cryodur® 2767 Cold Work Die Steel Flange

1,We Manufacturing processes are primarily classified into four types: 1:Forging, 2:Casting, 3:Cutting, 4:Rolling. 2,We can manufacture in accordance with these standards. Standards: GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards). Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others. The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160. The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500. Flange Classification 1. **According to Chemical Industry Standards:** Flanges are classified as follows: Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)). 2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows: Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation). 3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows: Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange. 4. **According to Connection Method/Type:** Flanges are classified as follows: Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc. 5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges. 6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges. A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts." -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach Cryodur® 2767 Cold Work Die Steel Flange Product Information -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach Cryodur® 2767 Cold Work Die Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Schmolz + Bickenbach Cryodur® 2767 Cold Work Die Steel Product Information -:- For detailed product information, please contact sales. -: # **Schmolz + Bickenbach Cryodur® 2767 - High-Toughness Cold Work Tool Steel** ## **Product Overview** Cryodur® 2767 is a premium chromium-tungsten alloyed, oil-hardening cold work tool steel produced by Schmolz + Bickenbach. This grade is specifically engineered to deliver **exceptional toughness** combined with good wear resistance and dimensional stability. It corresponds to the classic AISI S7 / DIN 1.2767 shock-resistant steel, making it the ideal choice for applications subjected to severe impact loading and cyclic stresses where fracture resistance is critical. ## **Key Characteristics & Advantages** - **Superior Impact Toughness:** Outstanding resistance to chipping and cracking under shock loads - **Good Wear Resistance:** Maintains adequate wear performance despite high toughness - **Excellent Dimensional Stability:** Minimal distortion during heat treatment - **Deep Hardening Capability:** Achieves uniform hardness in substantial cross-sections - **Good Machinability:** Favorable machining properties in annealed condition - **Versatile Heat Treatment:** Can be used in both hardened and sub-zero treated conditions ## **International Standard Designations** | Standard | Designation | Alternative Names | |----------|-------------|-------------------| | **AISI** | S7 | - | | **DIN / W-Nr.** | 1.2767 | X45NiCrMo4 | | **EN** | - | - | | **JIS** | - | - | | **ISO** | - | - | | **UNS** | T41907 | - | | **AFNOR** | 45NCD16 | - | | **GB (China)** | 5CrNiMo | Similar type | *Note: Exact equivalents may vary by standard and specific composition ranges.* ## **Chemical Composition (%)** | Element | Minimum | Maximum | Typical Range | |---------|---------|---------|---------------| | **Carbon (C)** | 0.45 | 0.55 | 0.50 | | **Silicon (Si)** | 0.15 | 0.35 | 0.25 | | **Manganese (Mn)** | 0.60 | 0.90 | 0.75 | | **Chromium (Cr)** | 3.00 | 3.50 | 3.25 | | **Nickel (Ni)** | 1.30 | 1.80 | 1.50 | | **Molybdenum (Mo)** | 0.30 | 0.50 | 0.40 | | **Vanadium (V)** | - | - | - | | *Iron (Fe)* | *Balance* | | | *Proprietary balance of micro-alloying elements may be present to enhance specific properties.* ## **Physical Properties** | Property | Value | Conditions / Notes | |----------|-------|-------------------| | **Density** | 7.78 g/cm³ | At 20°C | | **Thermal Conductivity** | 42.0 W/(m·K) | At 20°C | | **Specific Heat Capacity** | 460 J/(kg·K) | At 20°C | | **Coefficient of Thermal Expansion** | 11.8 × 10⁻⁶/K | 20-200°C | | **Elastic Modulus** | 210 GPa | At 20°C | | **Electrical Resistivity** | 0.35 μΩ·m | At 20°C | ## **Mechanical Properties** ### **Annealed Condition** - **Hardness:** 200-240 HB - **Tensile Strength:** 700-850 MPa - **Yield Strength (Rp0.2):** ≥ 450 MPa - **Elongation (A5):** ≥ 15% - **Machinability:** 70% (compared to 1% C steel) ### **Hardened & Tempered Condition** *Typical values after proper heat treatment:* - **Working Hardness Range:** 54-58 HRC (optimal toughness) - **Compressive Strength:** 2,000-2,400 MPa - **Impact Toughness (Charpy):** 40-60 J (exceptionally high for tool steel) - **Flexural Strength:** High ### **Hardness vs. Tempering Temperature** | Tempering Temperature | Resulting Hardness (HRC) | Impact Toughness | |-----------------------|--------------------------|------------------| | 150°C | 56-58 | Very High | | 200°C | 55-57 | Excellent | | 300°C | 53-55 | Excellent | | 400°C | 50-52 | High | | 500°C | 45-48 | Very High | ## **Heat Treatment Guidelines** ### **Soft Annealing** - **Temperature:** 680-720°C - **Cooling:** Slow furnace cooling to 600°C, then air cool - **Resulting Hardness:** ≤ 240 HB ### **Stress Relieving** - **Temperature:** 600-650°C - **Soak Time:** 1-2 hours per inch - **Cooling:** Air cool ### **Hardening Process** 1. **Preheating:** 550-650°C (thorough equalization) 2. **Austenitizing Temperature:** 930-980°C - *925-950°C for maximum toughness* - *950-980°C for higher hardness/wear resistance* 3. **Soaking Time:** 20-30 minutes per inch at austenitizing temperature 4. **Quenching:** In well-circulated oil (40-60°C) 5. **Quench Delay:** Immediate quenching after reaching temperature ### **Tempering** - **Immediate Tempering:** Required after quenching (within 1 hour) - **Temperature Range:** 150-250°C for 54-58 HRC - 400-500°C for lower hardness with exceptional toughness - **Cycles:** Double tempering recommended (2 hours each minimum) - **Cooling:** Air cool after each tempering cycle ### **Sub-Zero Treatment** (Optional) - **Temperature:** -70 to -100°C - **Duration:** 2-4 hours - **Timing:** Between quenching and tempering - **Benefit:** Transforms retained austenite, increases dimensional stability ## **Typical Applications** ### **Impact & Shock Tools** - **Chisels & Punches:** For concrete, rock, and metal working - **Hammer Heads:** For pneumatic and mechanical hammers - **Shear Blades:** For heavy-duty cutting applications - **Demolition Tools:** Jackhammer bits, breaker tools ### **Cold Work Tooling** - **Punching Dies:** For thick materials and high-impact applications - **Forming Tools:** Where fracture resistance is critical - **Trimming Dies:** For automotive and heavy-gauge materials - **Heading Dies:** For cold heading operations ### **Plastic & Die Casting** - **Cavity Inserts:** For high-pressure die casting (aluminum, magnesium) - **Cores & Ejector Pins:** Where thermal shock resistance is needed - **Mold Bases:** For large, complex molds ### **Special Applications** - **Knives & Cutting Tools:** For abrasive materials requiring toughness - **Machine Components:** Gears, cams, and wear plates - **Aerospace Tooling:** Jigs, fixtures, and assembly tools ## **Machining & Fabrication** ### **Machinability (Annealed)** - **Turning & Milling:** Good (use positive rake angles) - **Drilling:** Adequate (use proper coolant) - **Grinding:** Good with appropriate wheels - **EDM:** Suitable with standard parameters ### **Welding** - **Preheat:** 300-400°C required - **Post-Weld Heat Treatment:** Stress relieve at 550-600°C - **Filler Material:** Matching or austenitic stainless electrodes - **Note:** Welding reduces hardness in HAZ - re-hardening recommended for critical tools ## **Surface Treatments** Cryodur® 2767 responds well to: - **Nitriding:** Increases surface hardness to 900-1100 HV - **CVD/PVD Coatings:** TiN, TiCN, AlCrN for enhanced performance - **Black Oxide:** For corrosion protection and lubricity - **Chrome Plating:** For improved release properties ## **Technical Comparison** | Property | Cryodur® 2767 (S7) | Cryodur® 2510 (O1) | Cryodur® 2379 (D2) | |----------|---------------------|---------------------|---------------------| | **Primary Strength** | Impact Toughness | Wear Resistance | Wear Resistance | | **Typical Hardness** | 54-58 HRC | 58-62 HRC | 58-62 HRC | | **Toughness** | Excellent | Good | Moderate | | **Wear Resistance** | Good | Moderate | Excellent | | **Distortion Control** | Excellent | Excellent | Good | | **Applications** | Impact tools | Precision tools | Long-run wear tools | ## **Availability & Forms** - **Round Bars:** 10mm to 300mm diameter - **Flat Bars:** Various thicknesses and widths - **Blocks:** For die and mold making - **Pre-finished Stock:** Precision ground to tolerances - **Forged Shapes:** Custom configurations available ## **Quality Assurance** - **Ultrasonic Testing:** For internal quality verification - **Macro/Micro Examination:** For cleanliness and structure - **Hardness Testing:** Uniformity verification - **Dimensional Checks:** Per customer specifications ## **Storage & Handling Recommendations** 1. **Storage Conditions:** Dry, temperature-controlled environment 2. **Handling:** Use proper lifting equipment for heavy sections 3. **Protection:** Preservative oils recommended for long-term storage 4. **Identification:** Material certificates accompany all shipments ## **Important Notes** 1. **Safety First:** Always follow proper heat treatment safety procedures 2. **Decarburization:** Protect surfaces during heat treatment 3. **Tool Design:** Incorporate adequate radii and avoid sharp corners 4. **Maintenance:** Regular inspection and maintenance extend tool life ## **Disclaimer** This technical information is for reference purposes only. For specific applications and critical tooling, always consult Schmolz + Bickenbach's official technical documentation and engage qualified metallurgical expertise. Actual performance may vary based on specific heat treatment parameters, section size, tool design, and operating conditions. -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach Cryodur® 2767 Cold Work Die Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7141 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® 2767 Cold Work Die Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Schmolz + Bickenbach Cryodur® 2767 Cold Work Die Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Schmolz + Bickenbach Cryodur® 2767 Cold Work Die Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Schmolz + Bickenbach Cryodur® 2767 Cold Work Die Steel Flange -:- 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 Flange 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 3612 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