4140 Heat Treated Alloy Round

A chromium-molybdenum, medium carbon alloy steel, 4140 is used in a wide variety of applications requiring high strength and toughness. The chromium imparts good hardness penetration while molybdenum provides hardness uniformity and strength. In the heat treated or prehard conditions it is in the 24-32 Rockwell C range and stress relieved to minimize warping during machining. Localized hardness may also be imparted by flame or induction hardening. Primarily used in press brake dies, 4140 is also a good choice for applications requiring greater toughness than mild steel. Other typical applications include: bolts, molds, stripper plates, slides, ejector plates, jigs, fixtures, punch plates, drill collars, couplings, axle shafts, valves, machinery shafts, reamer bodies, machine stops.

Typical Analysis:

Carbon
.38/.43
Sulfur
.040 max
Phosphorus
.035 max
Molybdenum
.15/.25
Chromium
.80/1.00
Silicon
.15/.35
Manganese
.75/1.00




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4140 HT Round Stock Sizes:

3/8" Dia 4140 CF HT Alloy Round
1/2" Dia 4140 CF HT Alloy Round
9/16" Dia 4140 CF HT Alloy Round
5/8" Dia 4140 CF HT Alloy Round
11/16" Dia 4140 CF HT Alloy Round
3/4" Dia 4140 CF HT Alloy Round
13/16" Dia 4140 CF HT Alloy Round
7/8" Dia 4140 CF HT Alloy Round
15/16" Dia 4140 CF HT Alloy Round
1" Dia 4140 CF HT Alloy Round
1-1/16" Dia 4140 CF HT Alloy Round
1-1/8" Dia 4140 CF HT Alloy Round
1-3/16" Dia 4140 CF HT Alloy Round
1-1/4" Dia 4140 CF HT Alloy Round
1-5/16" Dia 4140 CF HT Alloy Round
1-3/8" Dia 4140 CF HT Alloy Round
1-7/16" Dia 4140 CF HT Alloy Round
1-1/2" Dia 4140 CF HT Alloy Round
1-9/16" Dia 4140 CF HT Alloy Round
1-5/8" Dia 4140 CF HT Alloy Round
1-11/16" Dia 4140 CF HT Alloy Round
1-3/4" Dia 4140 CF HT Alloy Round
1-13/16" Dia 4140 CF HT Alloy Round
1-7/8" Dia 4140 CF HT Alloy Round
1-15/16" Dia 4140 CF HT Alloy Round
2" Dia 4140 CF HT Alloy Round
2-1/8" Dia 4140 CF HT Alloy Round
2-1/4" Dia 4140 CF HT Alloy Round
2-3/8" Dia 4140 CF HT Alloy Round
2-1/2" Dia 4140 CF HT Alloy Round
2-5/8" Dia 4140 CF HT Alloy Round
2-3/4" Dia 4140 CF HT Alloy Round
3" Dia 4140 CF HT Alloy Round
3-1/4" Dia 4140 CF HT Alloy Round
3-1/2" Dia 4140 CF HT Alloy Round
3-3/4" Dia 4140 CF HT Alloy Round
4" Dia 4140 CF HT Alloy Round
4" Dia 4140 HR HT Alloy Round
4-1/4" Dia 4140 HR HT Alloy Round
4-1/2" Dia 4140 HR HT Alloy Round
4-3/4" Dia 4140 HR HT Alloy Round
5" Dia 4140 HR HT Alloy Round
5-1/4" Dia 4140 HR HT Alloy Round
5-1/2" Dia 4140 HR HT Alloy Round
5-3/4" Dia 4140 HR HT Alloy Round
6" Dia 4140 HR HT Alloy Round
6-1/4" Dia 4140 HR HT Alloy Round
6-1/2" Dia 4140 HR HT Alloy Round
6-3/4" Dia 4140 HR HT Alloy Round
7" Dia 4140 HR HT Alloy Round
7-1/2" Dia 4140 HR HT Alloy Round
8" Dia 4140 HR HT Alloy Round
8-1/2" Dia 4140 HR HT Alloy Round
9" Dia 4140 HR HT Alloy Round
9-1/2" Dia 4140 HR HT Alloy Round
10" Dia 4140 HR HT Alloy Round
10-1/2" Dia 4140 HR HT Alloy Round
11" Dia 4140 HR HT Alloy Round
11-1/2" Dia 4140 HR HT Alloy Round
12" Dia 4140 HR HT Alloy Round
12-1/2" Dia 4140 HR HT Alloy Round
13" Dia 4140 HR HT Alloy Round