13-8 Stainless Steel Forgings

Great Lakes Forge & 13-8 Mo Stainless Steel

Great Lakes Forge offers the industry's best lead times for 13-8 stainless steel forgings. We can create custom forgings from 13-8 Mo steel in sizes up to 12' in length, from 2.5" to 24" in diameter/thickness, and weighing up to 6,000 lbs. With the industry's fastest turnaround times, our 13-8 stainless steel forging service is ideal for high or low volume production, as well as prototyping.

To accommodate your project's specific requirements, we can produce custom 13-8 Mo steel forgings in a wide variety of shapes. These include blocks, rectangles, flats, plates, rounds, discs, sleeves, hubs, spindles, stepshafts, sheets, and flat, square and round bars, as well as unique custom geometries. 

Our in-house machine shop, testing capabilities, and quality-controlled heat-treating processes guarantee the consistency, quality, and dimensional accuracy of forged 13-8 Mo parts. We also offer numerous milling and rough turning capabilities to deliver products that are close to intended size and shape at reasonable cost. 

Forged 13-8 Mo Stainless Steel Shapes

13-8 Mo Stainless Steel Properties 

13-8 stainless steel is a martensitic precipitation age-hardening material with many useful characteristics. The material's closely controlled chemical composition and microstructure give it a higher level of useful mechanical properties under severe environmental conditions than other ferrous metals can provide.

Beneficial properties of 13-8 Mo stainless steel include: 

  • High strength
  • High hardness
  • High fatigue strength
  • Good galling and stress corrosion resistance
  • Exceptional oxidation resistance at temperatures up to 1,100°F (593°C)
  • Excellent corrosion resistance (comparable to chromium nickel grades)

13-8 Stainless Steel Composition

Element % Content
Aluminum 0.90 to 1.35
 Carbon  0.05 (max.)
 Chromium  12.25 to 13.25
 Manganese 
 0.10 (max.)
 Molybdenum  2.00 to 2.50
 Nickel  7.50 to 8.50
 Nitrogen  0.01 (max.)
 Phosphorous  0.010 (max.)
Silicon  0.10 (max.)
Sulfur  0.008 (max.)
Iron  balance

13-8 Mo Stainless Steel Hardness 

Tempered 13-8 stainless steel can achieve Brinell scale hardness of up to 430, and Rockwell hardness of up to C45.

13-8 Stainless Steel Heat Treatment

13-8 Mo stainless steel can be hardened through solution heat treatment at temperatures from 950°F to 1,150°F (510°C to 621°C) for four hours. It must be air cooled to below 60°F (16°C) to allow for complete martensite transformation. 

13-8 Mo Stainless Steel Machinability

Cutting speed of 13-8 stainless steel averages 80 ft/min, similar to 17-4 stainless. Machinability of age-hardened 13-8 stainless steel improves in proportion to increases in hardening temperature. 

Contact Great Lakes Forge for Custom 13-8 Stainless Steel Forgings & More 

Request a quote today on custom 13-8 Mo steel forgings for your application. Or, contact Great Lakes Forge to learn more. 

In addition to 13-8 stainless steel forgings, we have the capabilities to produce custom forgings from over 200 different materials. If your project requires a specific type or grade of steel, please don't hesitate to contact us. The material you need may be in our inventory, and if it isn't, close relationships with our material providers enable us to procure the material you need quickly and cost-effectively.


Site Map | Site Credits: Ecreativeworks