4140 Heat Treated Alloy Round

Cold Finish | Hot Rolled

4140 heat treated alloy is a chromium-molybdenum, medium carbon alloy steel, and 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 26-32 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.

Finish: Cold Finished/Ground

Available Sizes: 3/8" thru 3 3/4" Dia

Typical Tolerances: +0/-.008"

Condition: Heat Treated Typical 26-32 Rockwell C

Applications: molds, stops, shafts, valves, collars, plates, bolts, slides

Specifications: A193, J1397, AMS 6349, G41400

Available in full bars or cut to size lengths, production cutting available

Color Code: ORANGE

Chemical Composition:

Carbon:	0.38/0.43
Chromium:	0.80/1.00
Molybdenum:	0.15/0.25
Manganese:	0.75/1.00
Silicon:	0.15/0.35
Phosphorus:	0.035 max
Sulfur:	0.040 max

Click here to view our Alloy Steel Guide

4140 HT CF Alloy 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

Finish: Hot Rolled

Available Sizes: 4" thru 13" Dia

Tolerances: +.060/.250"

Condition: Heat Treated 26-32 Rockwell C

Applications: molds, stops, shafts, valves, collars, plates, bolts, slides

Specifications: A434, J1397, AMS 6349, G41400

Available in full bars or cut to size lengths, production cutting available

Color Code: ORANGE

4140 HT HR Alloy Round Stock Sizes:

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
14" Dia 4140 HR HT Alloy Round

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