400 Stainless Steel Castings

As a leading supplier of 400 stainless steel castings to OEMs and commercial/industrial partners, we invite you to explore the details of our 400 stainless steel casting services below! We’re one of the top suppliers of 400 stainless steel investment castings and have the team, tools and processes to support just about any application. If you have questions, or would like to request a quote on a 400 stainless steel casting for your business, contact us today.

Pouring a Casting

Optical Emission Spectrometer

Lamothermic pours a wide variety of ferrous and nonferrous alloys. Below are some of the more common alloys and specifications we can cast your parts with. If you don’t see your desired alloy on the list, we still may be able to pour it so please contact us, so we can talk about your needs.

Metallurgical Controls
We ensure all chemistries are in control by checking metal upon arrival and after each pour with a Thermo Scientific ARL 3460 Optical Emission Spectrometer.

Improved Casting Quality
We provide value added services to ensure your castings meet all required specifications of both the purchase order and blue prints. Services we offer include machining, heat treating, plating, assembly and hot isostatic processing.

400 Series Stainless Steels
410, 416, 420, 431, 440C, 440F, CA6NM

Supported Specifications
AMS5350, MIL-S-81591, ASTM A743, AMS5349, ASTM A532

AlloyHeat Treat ConditionTensile StrengthYield StrengthElongation %Hardness
410Anneal, harden & temper90 ksi65 ksi18%20-35 HRB
416AAnneal, harden & temper80 ksi55 ksi15 %80 HRB – 35 HRC
420Anneal, harden & temper100 ksi70 ksi15 %80 – 35 HRC
431Anneal, harden & temper170 – 195 ksi125 – 145 ksi5 – 15 %25 – 45 HRC
440CNormalize, deep freeze, temper250 + ksi225 + ksi5 – 15 %25 – 45 HRC
440FAnneal, harden & temper200 + ksi185 + ksi2%25 – 45 HRC
CA6NMAnneal, harden & temper80 – 135 ksi3%5 – 20 %22 – 42 HRC