Spherical ASTM A442 Carbon Steel Powder, Grade 60

ASTM A442 Carbon Steel Spherical Powder, Grade 60 Product Information -:- For detailed product information, please contact sales. -: ASTM A442 Carbon Steel Spherical Powder, Grade 60 Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A442 Carbon Steel Powder, Grade 60 characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A442 Carbon Steel Powder, Grade 60 Particle Size -:- For detailed product information, please contact sales. -: -:- -:- 0-15μm ,5-25μm, 15-45μm, 15-53μm,20-63um, 45-75μm, 45-105μm, 45-150μm ,75-150μm. (Various granularities can be customized according to customer requirements) -:- For detailed product information, please contact sales. -:

Spherical ASTM A442 Carbon Steel Powder, Grade 60 Applicable processes -:- For detailed product information, please contact sales. -: Laser/electron beam additive manufacturing (SLM/EBM, 3D printing) Direct laser deposition (DLD) Used in thermal spray (TSA) Powder hot isostatic pressing (HIP) Metal injection molding (MIM) Powder metallurgy (PM) Laser cladding (LC), etc. -:- For detailed product information, please contact sales. -: Spherical ASTM A442 Carbon Steel Powder, Grade 60 Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A442 Carbon Steel, Grade 60 Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: ASTM A442 Grade 60 Carbon Steel Plate** **ASTM A442 Grade 60** is a **carbon-manganese-silicon steel plate** designed for **welded pressure vessels and structural applications requiring enhanced notch toughness at higher strength levels**. As part of the A442 "improved transition properties" series, this grade offers a minimum yield strength of 60 ksi (415 MPa) while maintaining improved resistance to brittle fracture compared to conventional carbon steels. The grade designation reflects its balanced approach between strength, toughness, and weldability for moderate temperature service. --- ## **1. Key International Standards** * **Primary Material Standard:** **ASTM A442/A442M** - Standard Specification for Pressure Vessel Plates, Carbon Steel, Improved Transition Properties * **Common Supplementary Standards:** * **ASTM A20/A20M:** General Requirements for Steel Plates for Pressure Vessels * **ASME Section II, Part A:** Adopted as **SA-442 Grade 60** in the ASME Boiler and Pressure Vessel Code * **ISO 9328-2:** Steel flat products for pressure purposes - Non-alloy and alloy steels with specified elevated temperature properties * **Related National Standards:** * **EN 10028-2:** P355GH (similar strength class, different chemical approach) * **JIS G3115:** SPV410 (Japanese pressure vessel steel with similar strength) * **GB 713:** Q370R (Chinese pressure vessel steel) --- ## **2. Chemical Composition (Weight %, ASTM A442)** | Element | Composition (%) | Metallurgical Function | |---------|----------------|------------------------| | Carbon (C) | 0.27 max | Primary strengthener, carefully controlled for weldability | | Manganese (Mn) | 0.85-1.50 | Enhances strength and hardenability, improves toughness through grain refinement | | Phosphorus (P) | 0.035 max | Impurity control (minimize temper embrittlement) | | Sulfur (S) | 0.040 max | Impurity control (minimize hot shortness and inclusions) | | Silicon (Si) | 0.15-0.30 | Deoxidizer (fully killed steel), solid solution strengthener | | Copper (Cu) | 0.35 max (when specified) | Optional addition for improved atmospheric corrosion resistance | *Note: The Mn/C ratio is typically maintained above 3.0 to ensure adequate toughness at the higher strength level.* ### **Carbon Equivalent Calculation:** - **IIW Formula:** CE = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15 - **Typical CE Range:** 0.40-0.48 (depending on actual composition) - **Weldability Classification:** Fair to good with proper procedures ### **Key Composition Features:** - **Moderate carbon content** optimized for 60 ksi yield strength - **Extended manganese range** (up to 1.50%) for enhanced strength without excessive carbon - **Silicon content** controlled for deoxidation without compromising toughness - **Tighter impurity control** than general structural steels --- ## **3. Mechanical & Physical Properties** ### **Minimum Mechanical Properties:** - **Tensile Strength:** **485-620 MPa** (70,000-90,000 psi) - **Yield Strength (0.2% offset, min):** **415 MPa** (60,000 psi) - **Elongation in 2 in. (50 mm):** **20% minimum** (balanced with higher strength) - **Reduction of Area:** Typically 40-50% ### **Notch Toughness Requirements (Defining Characteristic):** - **Charpy V-Notch Impact Test:** Mandatory requirement - **Standard Test Temperature:** Typically **0°C (32°F)** unless otherwise specified - **Minimum Absorbed Energy:** **20 J (15 ft-lb)** minimum average of three specimens - **Individual Specimen Minimum:** No single value less than 17 J (12.5 ft-lb) - **Alternative Testing:** May be specified at lower temperatures for special applications ### **Physical Properties:** | Property | Value | Conditions | |----------|-------|------------| | Density | 7.85 g/cm³ (0.284 lb/in³) | Room temperature | | Modulus of Elasticity | 200 GPa (29×10⁶ psi) | Room temperature | | Shear Modulus | 77 GPa (11.2×10⁶ psi) | Room temperature | | Poisson's Ratio | 0.29 | - | | Coefficient of Thermal Expansion | 11.7×10⁻⁶/°C | 20-100°C | | Thermal Conductivity | 49-51 W/m·K | 100°C | | Specific Heat | 450-470 J/kg·K | 100°C | | Electrical Resistivity | 0.20-0.25 μΩ·m | Room temperature | ### **Heat Treatment Condition:** - **Typical Supply Condition:** **Normalized** - **Normalizing Temperature:** 900-925°C (1650-1700°F) - **As-rolled condition:** May be permitted for thinner sections (typically ≤25 mm) - **Grain Size:** ASTM 5 or finer (achieved through aluminum grain refinement) --- ## **4. Key Characteristics & Advantages** ### **Strength-Toughness Balance (Primary Advantage):** - **Enhanced Strength:** 60 ksi yield provides 20% higher strength than Grade 55 - **Maintained Toughness:** Despite higher strength, maintains good notch toughness - **Improved Transition Temperature:** Lower ductile-brittle transition than conventional steels of similar strength ### **Fabrication Characteristics:** - **Good Weldability:** Moderate carbon equivalent allows welding with standard procedures - **Formability:** Adequate for moderate bending and forming operations - **Machinability:** Approximately 65% of free-cutting steel (1212) - **Consistent Properties:** Normalized condition ensures uniform microstructure ### **Economic & Practical Advantages:** - **Cost-Effective Strength:** Higher strength-to-weight ratio than lower grades - **Reduced Section Weight:** Potential for lighter structures compared to Grade 55 - **Availability:** Readily available in standard mill quantities - **Simplified Specifications:** Single grade covers strength and toughness requirements ### **Service Limitations:** - **Temperature Limit:** Maximum service temperature ~400°C (750°F) - **Corrosion Resistance:** Similar to carbon steel (unless copper-bearing) - **Not for Severe Environments:** Not a corrosion-resistant or weathering steel --- ## **5. Product Applications** ### **Pressure Vessels (Primary Market):** - **Medium Pressure Storage Vessels:** - LPG and propane storage tanks - Industrial gas storage (oxygen, nitrogen, argon) - Compressed air receivers for high-pressure systems - Process intermediate storage vessels - **Process Equipment:** - Chemical reactors for moderate temperature processes - Distillation columns and towers - Heat exchanger shells (particularly for higher design pressures) - Pressure filters and autoclaves - **Energy Sector Vessels:** - Steam drums and accumulators - Feedwater heaters and deaerators - Boiler components (non-fired parts) ### **Structural Applications:** - **Heavy Machinery Frames:** - Press frames and foundations - Large machine tool bases - Crane and hoist supporting structures - Mining equipment structural components - **Transportation Equipment:** - Railroad tank car shells - Heavy-duty trailer frames - Specialized transport container structures - **Construction & Infrastructure:** - Bridge components requiring higher strength - Heavy-duty support structures - Industrial platform and walkway systems ### **Special Applications Leveraging Toughness:** - **Cold Climate Equipment:** Components operating in seasonal cold environments - **Impact-Loaded Structures:** Equipment subject to shock or impact loading - **Fatigue-Sensitive Applications:** Where notch toughness correlates with fatigue resistance --- ## **6. Manufacturing & Quality Control** ### **Steelmaking Practice:** - **Primary Process:** Basic oxygen furnace (BOF) or electric arc furnace (EAF) - **Deoxidation:** Fully killed with silicon (and aluminum for grain control) - **Secondary Refining:** Ladle metallurgy for inclusion shape control - **Continuous Casting:** Standard practice for slab production ### **Rolling & Heat Treatment:** - **Controlled Rolling:** For as-rolled products to refine grain structure - **Normalizing:** Standard for most thicknesses to ensure consistent properties - **Temperature Control:** Precise control of normalizing temperature and time ### **Quality Assurance Testing:** 1. **Chemical Analysis:** Complete ladle and product analysis 2. **Tensile Testing:** Longitudinal and transverse samples 3. **Impact Testing:** Charpy V-notch at specified temperature 4. **Bend Testing:** For weld procedure qualification 5. **Ultrasonic Testing:** Optional for critical applications 6. **Macro/Micro Examination:** As specified for special requirements --- ## **7. Fabrication Guidelines** ### **Welding Procedures:** #### **Preheat Requirements:** | Thickness Range | Minimum Preheat Temperature | Notes | |-----------------|-----------------------------|-------| | ≤19 mm (¾ in) | Generally not required | For simple joints, low restraint | | 19-38 mm (¾-1½ in) | 65-120°C (150-250°F) | Most common range | | >38 mm (>1½ in) | 95-150°C (200-300°F) | For thick sections, high restraint | | **Ambient <0°C** | **Minimum 95°C (200°F)** | Regardless of thickness | #### **Recommended Filler Metals:** - **SMAW (Stick):** E7018, E7018-1, E7016 (low hydrogen essential) - **FCAW (Flux-cored):** E71T-1, E70T-1, E71T-12 - **GMAW (MIG):** ER70S-6, ER70S-3, ER70S-2 - **SAW (Submerged):** F7A2-EM12K, F7A0-EH14, F7A6-EM12K #### **Post-Weld Heat Treatment (PWHT):** - **Recommended when:** Thickness >32 mm (1¼ in) or highly restrained joints - **Optional when:** Thickness ≤32 mm with proper welding procedures - **Temperature Range:** 590-650°C (1100-1200°F) - **Soaking Time:** 1 hour per inch of thickness, minimum 1 hour - **Heating/Cooling Rate:** Maximum 220°C/h (400°F/h) through 400°C (750°F) ### **Forming & Machining:** - **Cold Bending:** Minimum radius typically 2.5× thickness for 90° bends - **Hot Forming:** Temperature range 900-1100°C (1650-2010°F) - **Machining Parameters:** Use positive rake tools, moderate speeds and feeds - **Shearing & Punching:** Suitable up to 25 mm (1 in) with proper tooling --- ## **8. Comparison with Similar Grades** ### **ASTM A442 Grade 60 vs. ASTM A516 Grade 60:** | Parameter | A442 Grade 60 | A516 Grade 60 | Key Differences | |-----------|---------------|---------------|-----------------| | **Primary Focus** | General pressure vessels with toughness | Pressure vessels for moderate/low temps | Similar applications | | **Impact Testing** | Always required | Grade-dependent requirements | A442 more rigorous | | **Carbon Content** | ≤0.27% | ≤0.27% | Same limit | | **Manganese Range** | 0.85-1.50% | 0.85-1.20% | A442 allows higher Mn | | **Typical Applications** | Broad pressure vessels | Primarily pressure vessels | A442 more versatile | | **Market Preference** | Less common today | Industry standard | A516 preferred | ### **ASTM A442 Grade 60 vs. ASTM A572 Grade 50:** | Parameter | A442 Grade 60 | A572 Grade 50 | Advantage | |-----------|---------------|---------------|-----------| | **Yield Strength** | 415 MPa (60 ksi) | 345 MPa (50 ksi) | A442 20% stronger | | **Primary Use** | Pressure vessels | Structural applications | Different purposes | | **Toughness** | Guaranteed impact values | May be specified | A442 standardized | | **Cost Factor** | Higher | More economical | A572 cheaper | ### **International Equivalents Comparison:** | Standard | Grade | Yield Strength (min) | Key Differences | |----------|-------|---------------------|-----------------| | **EN 10028-2** | P355GH | 355 MPa | Lower strength, different chemistry | | **JIS G3115** | SPV410 | 410 MPa | Similar strength, JIS requirements | | **GB 713** | Q370R | 370 MPa | Different strength level | | **ISO 9328-2** | P355GH | 355 MPa | European harmonized approach | --- ## **9. Design Considerations** ### **Pressure Vessel Design (ASME Section VIII):** - **Maximum Allowable Stress:** Dependent on temperature (refer to ASME II-D) - **Typical Design Temperature Range:** -30°C to 400°C (-20°F to 750°F) - **Joint Efficiency:** 0.70-1.00 depending on examination level - **Corrosion Allowance:** Typically 1.6-3.2 mm (1/16-⅛ in) ### **Structural Design Considerations:** - **Allowable Stresses:** Per AISC Specification or applicable building codes - **Fatigue Design:** Improved over conventional carbon steels due to toughness - **Connection Design:** Both welded and bolted connections suitable - **Stability Design:** Higher strength allows more slender sections ### **Temperature Limitations:** - **Minimum Design Metal Temperature (MDMT):** Can be as low as -30°C (-20°F) with proper impact testing - **Maximum Long-term Service:** ~400°C (750°F) for non-corrosive environments - **Creep Consideration:** Not recommended for sustained loading above 375°C (700°F) --- ## **10. Quality Standards & Certification** ### **Testing & Documentation Requirements:** - **Heat Analysis:** Required for each melt - **Product Analysis:** May be specified for traceability - **Mechanical Tests:** Per heat treatment lot - **Impact Tests:** Per heat treatment charge at specified frequency ### **Certification Requirements:** - **Mill Test Certificate:** Complete chemical and mechanical properties - **Heat Treatment Records:** For normalized material - **Traceability:** Full traceability from melt to finished plate - **Non-Destructive Testing Reports:** When specified by purchase order ### **Marking & Identification:** - ASTM designation and grade - Manufacturer's name or trademark - Heat number - Size and weight - Normalized marking (if applicable) --- **Technical Summary:** ASTM A442 Grade 60 represents a carbon-manganese steel offering an optimized balance between strength (60 ksi yield), weldability, and guaranteed notch toughness. While its use has diminished in favor of more specialized grades like A516 Grade 60 for pressure vessels and A572 Grade 50/60 for structural applications, it remains a technically sound choice for applications requiring its specific combination of properties. The grade's mandatory impact testing ensures consistent toughness performance, making it suitable for applications where brittle fracture resistance is a concern. Proper fabrication practices, particularly regarding welding procedures and heat treatment, are essential to maintain the material's properties in service. For new designs, engineers should compare A442 Grade 60 with more commonly specified alternatives to determine the most appropriate and economical choice for their specific application requirements. -:- For detailed product information, please contact sales. -: ASTM A442 Carbon Steel, Grade 60 Specification Dimensions Size： Diameter 20-1000 mm Length <6011 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. -: ASTM A442 Carbon Steel, Grade 60 Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A442 Carbon Steel Powder, Grade 60 Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A442 Carbon Steel Powder, Grade 60 -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A442 Carbon Steel Spherical Powder, Grade 60 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A442 Carbon Steel Spherical Powder, Grade 60 -:- For detailed product information, please contact sales. -:

Packing of ASTM A442 Carbon Steel Spherical Powder, Grade 60 -:- 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 Spherical Powder 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 2482 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