Forged Stainless Steel Alloys

Forged Stainless Steel for Superior Strength & Corrosion Resistance

Stainless Steel is commonly used in open die and rolled ring forging for parts that operate in acidic, high temperature and cryogenic environments.

Scot Forge will work according to customers’ property requirements and forging needs. While stainless steel is usually forged to meet customer specifications, all grade types of stainless steel commonly work to ASTM specs; specifically: ASTM A182, ASTM A565, ASTM A965 and ASTM A750.

Scot Forge holds an inventory of various alloys for customers to order for their stainless steel forging needs and specifications:

Stainless Steel

304/304L 347 431 15-5PH FERRALIUM 255 ®
310 405 440A 17-4PH FERRALIUM SD40 ®
316/316L 410 440C 254 SMO ®  
317/317L 416 A182F51/DUPLEX 2205 NITRONIC GRADES  
321 420 13-8PH  

Forged Stainless Steel Advantages

Forged stainless steel is popularly used in a variety of industries, such as industrial, food, infrastructure and oil & gas due to its ability to perform in high stress and corrosive environments. Parts that can be manufactured using stainless steel forging include:

  • Turbine shafts
  • Structural components for cryogenic vessels
  • Nuclear waste container vessels
  • High strength parts for salt water environments

Stainless steel has overall benefits of corrosion resistance and machinability, but each grade type of stainless steel comes with its own set of benefits:


Austenitic stainless steel is the most common stainless steel grade type. It has the highest impact strength among grade types of stainless steel and has good cryogenic toughness.


Martensitic is another grade type of stainless steel, and it has high strength and presents good pitting corrosion-resistance.

Precipitation Hardening (PH)

PH stainless steel provides extreme strength, moderate toughness as well as strong fatigue life.


Duplex stainless steel has a good combination of strength and corrosion resistance.

Benefits of Forged Stainless Steel

  • Corrosion resistant (all grade types)
  • Austenitic: highest impact strength cryogenic toughness, non-magnetic
  • Martensitic: high strength, pitting corrosion resistance
  • PH: extreme strength and fatigue life, moderate toughness
  • Duplex: good combination of strength and corrosion resistance, good toughness at room temperature

​Forged Stainless Steel Capabilities

Our capabilities include eight hydraulic open die presses, four ring mills, six pneumatic hammers, one bar planishing mill and one hydraulic upset press. Scot Forge can produce parts that weigh from 1 lb. to 300,000 lbs. in stainless steel materials. Below is a list of our skills for stainless steel forging:

  • Round, square or hex bars up to 65" cross section and 10,000 lbs
  • Unique and innovative forged shapes powered by simulation and CAD software
  • Dics up to 144" O.D. with variable diameter and thickness ratios or combos and 100,000 lbs
  • Single or multiple O.D./I.D. up to 90" O.D. 2" minimum wall thickness and 100,000 lbs
  • single, double or tapered hubs up to 144" O.D. and 100,000 lbs
  • Rolled rings to 252" O.D., 49" height, and 60,000 lbs
  • Open die rings to 144" O.D., 90" height, and 100,000 lbs
  • Semi-closed die powered by CAD and simulation software
  • Step shafts concentric or eccentric to 65" O.D. and up to 100,000 lbs

In addition, we provide value-added processes such as saw cutting, heat treating, contour torch cutting, destructive testing, metallurgical analysis and Level III nondestructive testing for all stainless steel forging.

Quality Assurance

Scot Forge is proud to be ISO 9001:2015 certified as well as AS9100D and committed to providing outstanding customer satisfaction. Further pursuance of aerospace products has led to NADCAP accreditation in both Heat Treatment for stainless steel material and Nondestructive Testing. By developing a personal relationship with Scot Forge, each customer is valued and placed with a qualified team that will see through each stainless steel forging delivered from inquiry stage to order placement, expediting and shipping.