Color Code: NEON GREEN
4140 Chromium-Molybdenum Steel
Supplied in the annealed or prehardened condition. 4140 PREHARD is heat treated to a medium hardness (HRC 28/32) and is designated as 4140 HT. 4140 annealed is supplied in the soft condition and can be hardened to RC 40. 4140 HT is supplied in many forms such as hot rolled or turned, ground and polished rounds and DCF plate to be used as a holder material for high strength structural components. 4140 Prehard is stocked in a DCF, ground finished 4140 HT is available in plate, flat bar, or rounds Large Diameter 4140 HT in stock 4140 Prehard and Annealled Hollow Bar Tube Available.
We sell our trademark material Durelloy that is made to last and perform better than standard 4140
4140 Composition
- Element Weight %
- C 0.38-0.43
- Mn 0.75-1.00
- P 0.035 (max)
- S 0.04 (max)
- Si 0.15-0.30
- Cr 0.80-1.10
- Mo 0.15-0.25
4140 Mechanical Properties
4140 Hot Rolled:
Typical Tensile Strength: 89 KSI
Typical Yield Strength: 62 KSI
4140 Cold Rolled:
Typical Tensile Strength: 102 KSI
Typical Yield Strength: 90 KSI
4140 HT Oil Quenched & Tempered:
Typical Tensile Strength: 153 KSI
Typical Yield Strength: 131 KSI
Not sure what you are looking for? Contact Ameralloy Steel an ISO 9001 certified supplier that specializes in finding hard-to-find Stainless and Alloys. Along with our proprietary grades Amera-Braze, Durelloy, and Dura-Krome. Our knowledgeable sales team will help you find what you are looking for. With many shapes, sizes, and material grades available, we can help you find what you are looking for. The most common items stocked are Tube, Pipe, Sheet, Plate, Hex bar, Square bar, Round bar, Threaded bar, Pump Shaft, and Millimeter sizes. We offer added fabrication services. Contact us now for the current price and delivery.