Low Alloy Castings

As a top supplier of low alloy investment castings, Lamothermic is proud to serve a wide range of businesses. So, if you’re an OEM or industrial business looking for a trusted partner to cast and pour low alloy castings learn more details about our services below. If you have questions, or would like to request a quote on a low alloy 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.

Low Alloy Steels
4130, 4140, 4340, 52100, 6150, 8620, 9310

Supported Specifications
ASTM A732, ASTM A148, MIL-S-22141B, AMS 5336D, MIL-S-22141, ASTM A-732

AlloyHeat Treat ConditionTensile StrengthYield StrengthElongation %Hardness
4130Anneal, normalize or harden & temper85 – 185 ksi75 – 175 ksi5 – 20 %90 HRB / 50 HRC
4140Anneal, normalize or harden & temper110 – 180 ksi85 – 145 ksi2 – 20 %95 HRB / 55 HRC
4340Homogenize, normalize & temper or harden & temper125 – 250 ksi95 – 200 ksi2 – 15 %95 HRB / 58 HRC
52100Anneal, normalize or harden & temper175 – 225 ksi130 – 175 ksi1 – 5 %100 HRB / 60 HRC
6150Anneal, normalize or harden & temper90 – 190 ksi60 – 170 ksi10 – 25 %85 HRB / 45 HRC
8620Anneal, normalize, harden & temper or case harden85 – 175 ksi50 – 135 ksi5 – 25 %75 HRB / 55 HRC
9310Anneal, normalize, harden & temper or case harden55 HRC case