Low Alloy Steel Castings
Alloys
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.
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
We Also Pour Low Alloy Steels to These Specifications
ASTM A732, ASTM A148, MIL-S-22141B, AMS 5336D, MIL-S-22141, ASTM A-732
| Alloy | Heat Treat Condition | Tensile Strength | Yield Strength | Elongation % | Hardness |
|---|---|---|---|---|---|
| 4130 | Anneal, normalize or harden & temper | 85 – 185 ksi | 75 – 175 ksi | 5 – 20 % | 90 HRB / 50 HRC |
| 4140 | Anneal, normalize or harden & temper | 110 – 180 ksi | 85 – 145 ksi | 2 – 20 % | 95 HRB / 55 HRC |
| 4340 | Homogenize, normalize & temper or harden & temper | 125 – 250 ksi | 95 – 200 ksi | 2 – 15 % | 95 HRB / 58 HRC |
| 52100 | Anneal, normalize or harden & temper | 175 – 225 ksi | 130 – 175 ksi | 1 – 5 % | 100 HRB / 60 HRC |
| 6150 | Anneal, normalize or harden & temper | 90 – 190 ksi | 60 – 170 ksi | 10 – 25 % | 85 HRB / 45 HRC |
| 8620 | Anneal, normalize, harden & temper or case harden | 85 – 175 ksi | 50 – 135 ksi | 5 – 25 % | 75 HRB / 55 HRC |
| 9310 | Anneal, normalize, harden & temper or case harden | — | — | — | 55 HRC case |