Yuhong Group Co.,Ltd
| Product Name | Alloy Steel Forged Disc |
| High Light | ASTM A182 F11 Class 2 Disc, Alloy Steel Forged Rounds |
| Payment Terms | L/C,T/T |
| Size | 1/2" to 48" |
| Delivery Time | 7 DAYS |
| Material | F11 |
| Process | Forging, Machining |
| Thisckness | As per requirements |
| Packaging Details | Ply-wooden Case / pallet |
| Standard | ASTM A182, ASME SA182 |
| Dimensions | ANSI Flange, ASME Flange, BS Flange, DIN Flanges, EN Flange |
| Model Number | ASTM A182 F11 CL2 Alloy Steel Forged Discs |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
| Brand Name | YUHONG |
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Product Specification
| Product Name | Alloy Steel Forged Disc | High Light | ASTM A182 F11 Class 2 Disc, Alloy Steel Forged Rounds |
| Payment Terms | L/C,T/T | Size | 1/2" to 48" |
| Delivery Time | 7 DAYS | Material | F11 |
| Process | Forging, Machining | Thisckness | As per requirements |
| Packaging Details | Ply-wooden Case / pallet | Standard | ASTM A182, ASME SA182 |
| Dimensions | ANSI Flange, ASME Flange, BS Flange, DIN Flanges, EN Flange | Model Number | ASTM A182 F11 CL2 Alloy Steel Forged Discs |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | CHINA |
| Brand Name | YUHONG | ||
| High Light | ASTM A182 Grade F11 alloy steel discs ，forged steel rounds for industry ，alloy steel blanks with warranty | ||
ASTM A182 F11 CL2 Forged Discs Alloy Steel Forgings Forged Rounds Blanks for Industry
ASTM A182 Grade F11 Class 2 is a quenched-and-tempered, low-alloy chromium-molybdenum (1.25Cr-0.5Mo) steel forging specification. When supplied as discs, rounds, or blanks, it refers to hot-forged, near-net-shape solid metal pieces that are fully heat-treated to achieve high tensile strength (≥585 MPa) and creep resistance, specifically manufactured for subsequent finish-machining into critical pressure-containing components used in high-temperature (up to 565°C) and high-pressure industrial services. Intended solely as the starting material for machining finished components like flanges, valve bodies, pipe tees, tube sheets, and pressure vessel nozzles in power plants, oil refineries, and chemical reactors.
Equivalent Grade of ASTM A182 Grade F11 CL2 Discs Alloy Steel Forgings Forged Rounds Blanks
| Common Name | Type | UNS | Forging Spec. | Casting Spec. Equivalent | DIN |
|---|---|---|---|---|---|
| 1.25Cr-0.5Mo | K11572 | A182 F11 cl2 | A217 WC6 | 13CRM044 | 1.7335 |
Chemical Composition % of ASTM A182 Grade F11 CL2 Discs Alloy Steel Forgings Forged Rounds Blanks
| Grade | C | Mn | Si | S | P | Cr | Mo |
| ASTM A182 F11 Flange | 0.05 - 0.15 | 0.3 - 0.6 | 0.5 - 1 | 0.03 | 0.03 | 1 - 1.5 | 0.044 - 0.65 |
Mechanical Properties of ASTM A182 Grade F11 CL2 Discs Alloy Steel Forgings Forged Rounds Blanks
| Mechanical Properties | Original Value | Comments |
|---|---|---|
| Hardness, Brinell | 143 - 207 | |
| Tensile Strength, Ultimate | 485 MPa | |
| Tensile Strength, Yield | 275 MPa | |
| Elongation at Break | 20 % | in 2 in. (50 mm) |
| Reduction of Area | >= 30 % |
Comparison: CL1 vs CL2 (Why choose Class 2?)
| Specification | Class 1 | Class 2 |
|---|---|---|
| Heat Treatment | Normalize + Temper | Quench + Temper |
| Yield Strength | ≥ 205 MPa | ≥ 310 MPa (40% stronger) |
| Toughness | Good | Excellent (higher impact resistance) |
| Application | Light to moderate pressure | Severe high-pressure/high-temp cycles |
| Machinability | Easier | Slightly harder; requires carbide tooling |
Forging Process for Discs, Rounds & Blanks
Process: The steel is melted (often via Electric Arc Furnace or VIM/VAR for critical applications), cast into ingots, and then hot-forged using open-die hammering or upset forging.
Forge Ratio: A minimum reduction ratio of 3:1 is typically required to ensure grain refinement and closure of internal porosity.
Grain Flow: For discs and blanks, the forging process is designed to maintain continuous grain flow around the circumference, which is critical for pressure-retaining applications.
Ultrasonic Testing (UT): Virtually all forgings are subject to 100% ultrasonic inspection per ASTM A388 to detect internal discontinuities (laminations, cracks, or porosity).
Key Industrial Applications
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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