Stainless Steel
Stainless Steel Forged Parts
All Metals & Forge Group manufactures high-performance stainless steel forged parts for corrosion-resistant and high-temperature applications. Stainless steel offers exceptional versatility due to its wide range of grades, heat treatments, and alloy compositions. Because each grade behaves differently during forging and in service, proper material selection remains critical.
We produce open die forgings and seamless rolled rings in austenitic, martensitic, ferritic, duplex, and precipitation-hardening stainless steels.
Common stainless steels include:
304/304L, 316/316L, 321, 410, 416, 420, 422, and 431, 2205 and 2207. Common specifications include ASTM A182 F-Series, A276, A564, A705, A688, AISI, AMS, ASME, UNS, and international standards depending upon the shape of the alloy steel for its end use.
300 Series Austenitic Stainless Steels
The 300 series represents the most widely used stainless steel family. Grade 304 serves as a reliable general-purpose alloy; however, manufacturers often modify it by increasing chromium and nickel or by adding molybdenum and copper. These additions improve corrosion resistance in aggressive environments.
Austenitic stainless steels provide excellent heat resistance and toughness. In fact, forging 300 series grades requires two to three times more energy than forging carbon or alloy steels. Therefore, we carefully control forging temperatures to prevent grain boundary carbide precipitation.
After forging, we typically anneal these materials at approximately 1950°F (1065°C) and rapidly cool them through the 1500°F to 900°F range. This process preserves corrosion resistance and mechanical integrity.
400 Series Stainless Steels
The 400 series includes both martensitic and ferritic grades. Martensitic stainless steels contain higher carbon levels and offer high strength and wear resistance. Because these grades are heat treatable, they perform well in demanding mechanical applications.
During forging, we control temperature and cooling rates to avoid excessive delta ferrite formation, which can reduce forgeability in some grades. Proper heat treatment, including annealing, hardening, and tempering, ensures the final properties meet service requirements.
Ferritic stainless steels, in contrast, cannot be hardened through heat treatment. They offer moderate corrosion resistance and limited forging applications. However, strict temperature control remains essential to prevent grain growth.
Duplex and Precipitation-Hardening Grades
Duplex stainless steels, such as 2205, balance austenitic and ferritic structures. By adjusting chromium and nickel content, manufacturers achieve high resistance to stress corrosion cracking. As a result, duplex grades perform exceptionally well in chemical processing and marine environments.
Precipitation-hardening (PH) stainless steels combine corrosion resistance with high strength. After solution heat treatment, we apply controlled aging at relatively low temperatures to achieve specified mechanical properties. Consequently, PH grades serve aerospace, energy, and high-performance industrial applications.
Applications of Stainless Steel Forged Parts
Stainless steel forged parts serve industries such as food processing, oil and gas, chemical processing, marine, aerospace, defense, and power generation. Because these sectors demand corrosion resistance and long service life, forged stainless components often replace fabricated or cast alternatives.
Common forged shapes include shafts, discs, hubs, rings, cylinders, and complex custom geometries.
Quality Control and Machining Capabilities
All Metals & Forge Group operates under an ISO 9001:2015 and AS9100D registered quality system. We begin each project by reviewing end use, required mechanical properties, surface condition, geometry, and delivery schedule.
Every stainless steel forged part undergoes ultrasonic testing to verify internal soundness. In addition, we rough machine forgings to within 3 mm of finished dimensions. This practice reduces CNC machining time and lowers overall cost. Our standard rough-machined finish is 250 RMS to ensure accurate inspection.
When required, we perform finish machining to tolerances as tight as ±0.001 inch with 64 or 32 RMS surface finishes. Many suppliers ship parts as-forged or at 500 RMS; however, our machining standards significantly reduce downstream processing.
From inquiry through shipment, we actively manage quality at every stage. Whether producing a prototype or a full production run, we deliver stainless steel forged parts that meet demanding technical and commercial requirements.
All Metals & Forge Group takes great pride in maintaining one of the most stringent ISO9001, AS9100 quality systems in the open die forging and seamless rolled ring industry. It begins with learning the customer’s end use, required forging surface condition, mechanical properties of the specified material and alloy, forged shape, heat treatment, delivery need, and competitive price, coupled with forging soundness proven by ultrasonic testing, and care in packing goods to arrive in pristine condition at the customer’s desired location. Every step is monitored by the quality system at AMFG and continuously improved.
Quality and Performance
AMFG performs rough machining to within 3mm of finish dimensions to reduce the CNC cost at the customer’s machine shop for all the forged shapes the company produces. The rough machine surface condition is 250 RMS so that proper quality testing can be performed on each part – the AMFG standard.
The company can perform finish machining to within .001 of an inch for final tolerance and 64 or 32 RMS surface finish. This level of quality and precision is unique in an industry where other company’s parts are often delivered black, as forged, or with a rough machined surface of 500 RMS without the internal or external steps and dimensions to reduce machining costs.
From inquiry to invoice, All Metals & Forge Group quality is managed and not assumed. Whether the need is for one part, an entire project, or a production run, AMFG delivers.
U.S. 1 (973) 276-5000 • 1 (800) 600-9290 • Canada 1 (416) 363-2244
Fax: 1 (973) 276-5050 • Sales@Steelforge.com
Fast Quotes And Delivery
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In the U.S. 1 (973) 276-5000 / 1 (800) 600-9290.
In Canada 1 (416) 363-2244.
Email us at sales@steelforge.com.
