Low Alloy Steel Investment Castings

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