Grade ETD 150 Steel | McMaster-Carr

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37 Products

About Steel

Compare over 50 grades of steel and cast iron to find the right material for you—all with material certificates for traceability.

Easy-to-Machine High-Strength Multipurpose 4140 Alloy Steel Rods

Yield Strength: 130,000 psi
Hardness: Rockwell C32 (Hard)
Fabrication: Cold Worked
Specifications Met: ASTM A108

Often called ETD-150, this modified alloy steel is drawn at high temperatures for excellent strength and machinability. Also known as chrome-moly steel, 4140 alloy steel resists fracturing from repeated stress. It is used for a wide range of parts, such as gears, axles, and shafts. These rods have been hardened for added resistance to abrasion and impact. All have been manufactured to meet ASTM A108 standards for quality and performance.

Note: Rods may be made from either 4140 or 4142 alloy steel. They are interchangeable in most applications.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Heat Treatment	Straightness Tolerance	Elongation		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	4 ft. Lg.	6 ft. Lg.	8 ft. Lg.	12 ft. Lg.
7/16"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	00000000	00	000000	00	000000	00	000000	00	00
1/2"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	000000	00000	000000	00000	000000	00000	000000	0000000
9/16"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	00000	00	00000	00	00
5/8"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	0000	00000	00000	00000	00	00000	00	00000
11/16"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	00000	00	00000	00	00
3/4"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	00000	00	00000	00	00000
13/16"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	00000	00	00000	00	000000
7/8"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	00000	00	00000	00	000000
1"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	00000	00	00000	00	000000
1 1/8"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	00000000	00	00000	00	00000	00	000000	00	00
1 3/16"	-0.007" to 0"	Hardened	3/16" per 10 ft.	5%	00000000	00	00000	00	000000	00	000000	00	00
1 1/4"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	00000	00	000000	00	000000
1 3/8"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	00000000	00	00000	00	00000	00	000000	00	00
1 1/2"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	00000	000000	000000	000000	00	000000
1 5/8"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	000000	000000	000000	00	000000	00	00
1 3/4"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	000000	000000	000000	000000	000000	000000
2"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	0000000	00000	00000	000000	000000	000000	000000	000000	000000
2 1/4"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	00000000	00	000000	00	000000	00	000000	00	00
2 1/2"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	00000000	00	000000	00	000000	00	000000	00	00
2 3/4"	-0.007" to 0"	Hardened	3/16" per 10 ft.	5%	00000000	00	000000	00	000000	00	000000	00	00
3"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	00000000	00	000000	00	000000	00	000000	00	00
3 1/2"	-0.007" to 0"	Hardened	3/16" per 10 ft.	7%	00000000	00	000000	00	000000	00	00	00	00
12mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	00000	00000	00000	00	00000	00	00
14mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	00000	00000	00000	00	00000	00	00
15mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	00000	00000	00000	00	000000	00	00
16mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	00000	00000	00000	00	000000	00	00
18mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	00000	00000	000000	00	000000	00	00
20mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	00000	00000	000000	00	000000	00	00
25mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	00000	000000	000000	00	000000	00	00
30mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	000000	000000	000000	00	000000	00	00
35mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	000000	000000	000000	00	000000	00	00
40mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	000000	000000	000000	00	000000	00	00
50mm	-0.025mm to 0mm	Hardened	3/16" per 10 ft.	7%	0000000	00	000000	000000	000000	00	000000	00	00

Impact-Resistant High-Strength Multipurpose 4140 Alloy Steel Rods

Yield Strength: 130,000 psi
Hardness: Rockwell C32 (Hard)
Fabrication: Cold Worked
Specifications Met: ASTM A108

Also known as Supercut 150™, these rods have been hardened as well as turned and polished, giving them double the elongation of ETD-150 rods. They’re also more resistant to abrasion and impact. Often used for gears, axles, and shafts, 4140 alloy steel resists fracturing from repeated stress. It’s also called chrome-moly steel. All are manufactured to meet ASTM A108 standards for quality and performance.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Heat Treatment	Mechanical Finish	Straightness Tolerance	Elongation		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1"	-0.005" to 0"	Hardened	Turned and Polished	3/16" per 10 ft.	14%	00000000	000000	000000	0000000
1 1/4"	-0.006" to 0"	Hardened	Turned and Polished	3/16" per 10 ft.	14%	00000000	00000	000000	000000
1 1/2"	-0.006" to 0"	Hardened	Turned and Polished	3/16" per 10 ft.	14%	00000000	00000	000000	000000
2"	-0.007" to 0"	Hardened	Turned and Polished	3/16" per 10 ft.	14%	00000000	00000	000000	000000