McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Diameter Diameter

	Shape Shape

	Rod and Disc
	Sheet and Bar

	Tolerance Rating Tolerance Rating

Tight

Oversized

Undersized

	Mechanical Finish Mechanical Finish

Precision Ground

Turned

	Hardness Rating Hardness Rating

Medium

Hard

Very Hard

	Hardness Hardness

	Heat Treatment Heat Treatment

Annealed (Softened)

Hardened

	Yield Strength Yield Strength

55,000 psi

Not Rated

	Maximum Hardness After Heat Treatment Maximum Hardness After Heat Treatment

Rockwell C62

Rockwell C64

Rockwell C65

	Fabrication Fabrication

Hot Rolled

Cold Worked

	Specifications Met Specifications Met

ASTM

Mil. Spec.

	Length Length

1 ft.

3 ft.

6 ft.

	Thickness Thickness

	Width Width

12"

	For Joining For Joining

	Weight Weight

1 lbs.

5 lbs.

	Approximate Rods per Pound Approximate Rods per Pound

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138 Products

About Tool Steel

Precision ground and held to a strict straightness tolerance, these rods are ready for turning in your lathe. They’re also known as drill rod. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.

Rods

Yield Strength: 55,000 psi
Hardness: See Table
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C62
Specifications Met: ASTM A681

Dia.	Dia. Tolerance	Heat Treatment	Hardness	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/16"	-0.0003" to 0.0003"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	00000000	00	00000	00000
5/64"	-0.0003" to 0.0003"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	00000000	00	0000	0000
3/32"	-0.0003" to 0.0003"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	00000000	00	0000	0000
7/64"	-0.0003" to 0.0003"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	00000000	00	0000	0000
1/8"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	00000000	00	0000	0000
9/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
5/32"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
11/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
3/16"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
13/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
7/32"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
15/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
1/4"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B104	Precision Ground	0.005" per ft.	00000000	00	0000	00000
17/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
9/32"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
19/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
5/16"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
21/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
11/32"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
3/8"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
25/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
13/32"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
27/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
7/16"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
29/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
31/64"	-0.0005" to 0.0005"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	00000000	00	00000	00000
1/2"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	000000	00000	00000
17/32"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
9/16"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
19/32"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
5/8"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
21/32"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
11/16"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
3/4"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
13/16"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
7/8"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B101	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
1"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
1 1/16"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
1 1/8"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 1/4"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 3/8"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 1/2"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 3/4"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2 1/4"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2 1/2"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2 3/4"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
3"	-0.001" to 0.001"	Annealed (Softened)	Rockwell B110	Precision Ground	0.005" per ft.	0000000	000000	000000	000000

Metric Rods

Yield Strength: 55,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C62
Specifications Met: ASTM A681

Dia., mm	Dia. Tolerance, mm	Heat Treatment	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
2	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
3	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	0000	00000
4	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	0000	00000
5	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	0000	00000
6	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	00000	00000
7	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	00000	00000
8	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	00000	00000
9	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
10	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
11	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
12	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
13	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
14	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
15	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
16	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
17	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
18	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
19	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
20	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000
22	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000
25	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000

Tight-Tolerance Multipurpose Air-Hardening
A2 Tool Steel Rods with Certification

Yield Strength: 55,000 psi
Hardness: Rockwell B95 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C65
Specifications Met: ASTM A681

All come with a traceable lot number and test report. Also known as drill rod, they are precision ground and held to a strict straightness tolerance, so they're ready for turning in your lathe. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.

					3 ft. Lg.
Dia.	Dia. Tolerance	Heat Treatment	Mechanical Finish	Straightness Tolerance		Each
1/16"	-0.0003" to 0.0003"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
1/8"	-0.0005" to 0.0005"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
3/16"	-0.0005" to 0.0005"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
1/4"	-0.0005" to 0.0005"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
5/16"	-0.0005" to 0.0005"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
3/8"	-0.0005" to 0.0005"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
1/2"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
3/4"	-0.0015" to 0.0015"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000
1"	-0.0015" to 0.0015"	Annealed (Softened)	Precision Ground	0.005" per ft.	0000000	00000

Oversized Multipurpose Air-Hardening
A2 Tool Steel Rods and Discs

Yield Strength: 55,000 psi
Hardness: Rockwell B95 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C64

An oversized diameter allows for finishing to your exact requirements. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies. These rods and discs are decarb-free for a uniform surface that will consistently accept heat treating.

Dia.	Dia. Tolerance	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/2"	0.01" to 0.032"	Turned	1/8" per 5 ft.	00000000	000000	000000	000000
5/8"	0.01" to 0.032"	Turned	1/8" per 5 ft.	00000000	00000	00000	00000
3/4"	0.01" to 0.032"	Turned	1/8" per 5 ft.	00000000	00000	00000	00000
7/8"	0.01" to 0.032"	Turned	1/8" per 5 ft.	00000000	00000	00000	000000
1"	0.01" to 0.039"	Turned	1/8" per 5 ft.	00000000	00000	00000	000000
1 1/8"	0.01" to 0.041"	Turned	1/8" per 5 ft.	00000000	00000	00000	000000
1 1/4"	0.01" to 0.041"	Turned	1/8" per 5 ft.	00000000	00000	00000	000000
1 1/2"	0.015" to 0.041"	Turned	1/8" per 5 ft.	00000000	00000	000000	000000
1 3/4"	0.015" to 0.041"	Turned	1/8" per 5 ft.	00000000	00000	000000	000000
2"	0.015" to 0.047"	Turned	1/8" per 5 ft.	00000000	00000	000000	000000
2 1/4"	0.015" to 0.047"	Turned	1/8" per 5 ft.	00000000	000000	000000	000000
2 1/2"	0.015" to 0.051"	Turned	1/8" per 5 ft.	00000000	000000	000000	000000
2 3/4"	0.015" to 0.051"	Turned	1/8" per 5 ft.	00000000	000000	000000	000000
3"	0.015" to 0.051"	Turned	1/8" per 5 ft.	00000000	000000	000000	000000
3 1/4"	0.02" to 0.067"	Turned	1/8" per 5 ft.	00000000	000000	000000	000000
3 1/2"	0.02" to 0.067"	Turned	1/8" per 5 ft.	00000000	000000	000000	000000
3 3/4"	0.02" to 0.067"	Turned	1/8" per 5 ft.	00000000	000000	000000	00000000
4"	0.02" to 0.067"	Turned	1/8" per 5 ft.	00000000	000000	000000	00000000

Hardened Tight-Tolerance Multipurpose
Air-Hardening A2 Tool Steel Rods

Yield Strength: Not Rated
Hardness: Rockwell C60 (Very Hard)

Hardened for increased abrasion and impact resistance, these rods are precision ground with a tight diameter tolerance. Also known as drill rod, they're all set for turning applications in your lathe. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.

Dia.	Dia. Tolerance	Mechanical Finish		1/2 ft. Lg.	1 ft. Lg.
5/64"	-0.0003" to 0"	Precision Ground	0000000	000000	000000
3/32"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
1/8"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
5/32"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
3/16"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
7/32"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
1/4"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
5/16"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
11/32"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
3/8"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
7/16"	-0.0003" to 0"	Precision Ground	0000000	00000	00000
1/2"	-0.0003" to 0"	Precision Ground	0000000	00000	00000

Tight-Tolerance Multipurpose Air-Hardening
A2 Tool Steel Sheets and Bars

These sheets and bars, also known as flat stock, are precision ground to a tight thickness tolerance. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.

Sheets

Yield Strength: Not Rated
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C62

6" × 6"
Thick.	Thickness Tolerance	Heat Treatment	Mechanical Finish		Each
1/16"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1/8"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000
3/16"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000
1/4"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000
3/8"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000
1/2"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000
3/4"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000
1"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
12" × 12"
1/16"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000
1/8"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
3/16"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1/4"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
3/8"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1/2"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
3/4"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
12" × 36"
1/16"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1/8"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
3/16"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1/4"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
3/8"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1/2"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
3/4"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	000000
1"	-0.001" to 0.001"	Annealed (Softened)	Precision Ground	0000000	00000000

TIG Welding Rods for Joining Dissimilar Metals

1 lbs.
Dia.	Lg.	For Joining	Welding Current Designation	Shielding Gas Required	Shielding Gas Included	Approximate Rods per Pound		Pkg.
ERCuAL-A2
1/16"	36"	Steel, Stainless Steel, Cast Iron, Copper, Bronze	DCEP	Yes	No	30	00000000	000000
3/32"	36"	Steel, Stainless Steel, Cast Iron, Copper, Bronze	DCEP	Yes	No	10	00000000	00000
1/8"	36"	Steel, Stainless Steel, Cast Iron, Copper, Bronze	DCEP	Yes	No	8	00000000	00000
5 lbs.
ERCuAL-A2
1/16"	36"	Steel, Stainless Steel, Cast Iron, Copper, Bronze	DCEP	Yes	No	30	00000000	00000
3/32"	36"	Steel, Stainless Steel, Cast Iron, Copper, Bronze	DCEP	Yes	No	10	00000000	00000
1/8"	36"	Steel, Stainless Steel, Cast Iron, Copper, Bronze	DCEP	Yes	No	8	00000000	00000

Terms and Conditions and Privacy Policy

About Tool Steel

Tight-Tolerance MultipurposeAir-Hardening A2 Tool Steel Rods

Tight-Tolerance Multipurpose Air-HardeningA2 Tool Steel Rods with Certification

Oversized Multipurpose Air-HardeningA2 Tool Steel Rods and Discs

Hardened Tight-Tolerance MultipurposeAir-Hardening A2 Tool Steel Rods

Tight-Tolerance Multipurpose Air-HardeningA2 Tool Steel Sheets and Bars

TIG Welding Rods for Joining Dissimilar Metals

Tight-Tolerance Multipurpose
Air-Hardening A2 Tool Steel Rods

Tight-Tolerance Multipurpose Air-Hardening
A2 Tool Steel Rods with Certification

Oversized Multipurpose Air-Hardening
A2 Tool Steel Rods and Discs

Hardened Tight-Tolerance Multipurpose
Air-Hardening A2 Tool Steel Rods

Tight-Tolerance Multipurpose Air-Hardening
A2 Tool Steel Sheets and Bars