420 Stainless Steel | McMaster-Carr

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420 Stainless Steel

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	Shape Shape


Sheet and Bar	Rod and Disc

Foil

	System of Measurement System of Measurement

Inch

Metric

	Thickness Thickness

	Diameter Diameter

	Width Width

	Hardness Hardness

	Heat Treatment Heat Treatment

Annealed (Softened)

Hardened

Case Hardened

	Tolerance Rating Tolerance Rating

Standard

Tight

Oversized

	Fabrication Fabrication

Cold Worked

Hot Rolled

Cold Rolled

	Yield Strength Yield Strength

	Maximum Hardness After Heat Treatment Maximum Hardness After Heat Treatment

Rockwell C50

Rockwell C55

	Mechanical Finish Mechanical Finish

Precision Ground

Polished

Turned

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Magnetic Properties Magnetic Properties

Magnetic

	Elongation Elongation

25%

	Maximum Temperature Maximum Temperature

1,000° to 1,499° F

	Minimum Temperature Minimum Temperature

Not Rated

	Appearance Appearance

Plain

	Heat Treatable Heat Treatable

Yes

	End Type End Type

	Straight

	Length Length

	Specifications Met Specifications Met

ASTM

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About Stainless Steel

About Shafts

Yield Strength: 40,000 psi
Hardness: Rockwell C25 (Hard)
Heat Treatment: Annealed (Softened)
Max. Hardness After Heat Treatment: Rockwell C50
Specifications Met: ASTM A276

Suitable for making molds, 420 stainless steel is a hard, wear-resistant material that can be finely polished to a very smooth surface. It maintains its corrosion resistance in temperatures up to 1150° F.

For technical drawings and 3-D models, click on a part number.

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

Dia.	Dia. Tolerance	Fabrication	Straightness Tolerance	Magnetic Properties		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/2"	-0.003" to 0.003"	Cold Rolled	1/16" per 5 ft.	Magnetic	0000000	00000	000000	000000	000000	000000
5/8"	-0.003" to 0.003"	Cold Rolled	1/16" per 5 ft.	Magnetic	0000000	0000	00000	00000	00000	00000
3/4"	-0.003" to 0.003"	Cold Rolled	1/16" per 5 ft.	Magnetic	0000000	00000	00000	00000	00000	00000
1"	-0.003" to 0.003"	Cold Rolled	1/16" per 5 ft.	Magnetic	0000000	00000	00000	00000	00000	000000
1 1/4"	-0.003" to 0.003"	Cold Rolled	1/16" per 5 ft.	Magnetic	0000000	00000	00000	00000	000000	000000
1 1/2"	-0.003" to 0.003"	Cold Rolled	1/16" per 5 ft.	Magnetic	0000000	00000	00000	000000	000000	000000

Tight-Tolerance Very-Wear-Resistant 420 Stainless Steel

Yield Strength: 50,000 psi
Hardness: Rockwell C25 (Hard)
Heat Treatment: Annealed (Softened)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C55

Also called flat stock, these precision-ground bars are held to tight thickness and width tolerances. Suitable for making molds, 420 stainless steel is a hard, wear-resistant material that can be finely polished to a very smooth surface. It maintains its corrosion resistance in temperatures up to 1150° F.

For technical drawings and 3-D models, click on a part number.

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

1/4" Thick. (0" to 0.015" Tolerance)
Wd.	Fabrication	Mechanical Finish	Straightness Tolerance	Magnetic Properties		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.
1"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	0000000	0000000
2"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
3"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
4"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
1/2" Thick. (0" to 0.015" Tolerance)
1"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
2"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
3"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
4"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
3/4" Thick. (0" to 0.015" Tolerance)
1"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
2"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
3"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
4"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
1" Thick. (0" to 0.015" Tolerance)
1"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
2"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
3"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000
4"	Hot Rolled	Precision Ground	0.005" per ft.	Magnetic	0000000	000000	000000	000000

Hardened Very-Wear-Resistant 420 Stainless Steel

Yield Strength: Not Rated
Hardness: Rockwell C50 (Hard)
Heat Treatment: Hardened

This material is hardened for increased wear resistance over standard 420 stainless steel. Suitable for making molds, 420 stainless steel is a hard, wear-resistant material that can be finely polished to a very smooth surface. It maintains its corrosion resistance in temperatures up to 1150° F.

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

Foil

Thick.	Thick. Tolerance	Fabrication	Flatness Tolerance	Magnetic Properties		6” × 6”	6" × 12"	6" × 24"	6" × 48"
0.01"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	000000	000000	000000	0000000	0000000
0.012"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	000000	00000	00000	000000	000000

Sheets

Thick.	Thick. Tolerance	Fabrication	Flatness Tolerance	Magnetic Properties		6” × 6”	6" × 12"	6" × 24"	6" × 48"
0.015"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	000000	000000	000000	0000000	0000000
0.018"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	000000	00000	00000	000000	000000
0.02"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	000000	00000	00000	000000	000000
0.025"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	000000	00000	00000	000000	000000
0.032"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	000000	00000	00000	000000	000000
0.039"	-0.001" to 0.001"	Cold Worked	0.010" per in.	Magnetic	0000000	00000	00000	000000	000000
0.058"	-0.002" to 0.002"	Cold Worked	0.010" per in.	Magnetic	0000000	00000	00000	000000	000000
0.125"	-0.003" to 0.003"	Cold Worked	0.010" per in.	Magnetic	0000000	00000	000000	00	00

Linear Motion Shafts

Smooth, hard, and wear resistant, linear motion shafts work with linear bearings to reduce friction in manual and automated systems, such as those found in packing, machine tool, and material handling operations. The smooth surface reduces friction and wear on the bearing—the lower the microinch value a shaft has, the smoother its finish and the less friction it will create. All are turned, ground, and polished to tight diameter and straightness tolerances.

Stainless steel shafts are more corrosion resistant than steel shafts; however, they’re not as hard as steel shafts and can be more difficult to machine. 420 stainless steel and 440C stainless steel shafts have good corrosion resistance. Shafts with chamfered edges have their edges ground to reduce damage to bearings, housings, and other components during installation.

Case-hardened shafts are hardened only on the surface of the shaft, which increases wear resistance while allowing the center to remain soft for absorbing stresses caused by shifting loads.

For technical drawings and 3-D models, click on a part number.

Metric—420 Stainless Steel

6 mm Dia. (Tolerance: -0.008 mm to 0 mm)
Lg., mm	Lg. Tolerance, mm	Straightness Tolerance	Surface Smoothness, microinch	Edge Type	Hardness Rating	Hardness	Heat Treatment	Yield Strength, psi		Each
200	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	000000	000000
400	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	000000	00000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	000000	00000
8 mm Dia. (Tolerance: -0.009 mm to 0 mm)
200	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	00000
400	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	00000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	00000
10 mm Dia. (Tolerance: -0.009 mm to 0 mm)
200	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
400	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
12 mm Dia. (Tolerance: -0.011 mm to 0 mm)
200	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
400	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
15 mm Dia. (Tolerance: -0.011 mm to 0 mm)
200	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
400	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
16 mm Dia. (Tolerance: -0.011 mm to 0 mm)
200	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
400	-0.5 to 0.5	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
20 mm Dia. (Tolerance: -0.013 mm to 0 mm)
500	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,500	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
25 mm Dia. (Tolerance: -0.013 mm to 0 mm)
500	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	00000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,500	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
30 mm Dia. (Tolerance: -0.013 mm to 0 mm)
500	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,500	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
40 mm Dia. (Tolerance: -0.016 mm to 0 mm)
500	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
1,500	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	0000000	000000
50 mm Dia. (Tolerance: -0.016 mm to 0 mm)
500	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	000000
600	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	000000
800	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	000000
1,000	-0.8 to 0.8	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	000000
1,200	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	000000
1,500	-1.2 to 1.2	0.03 mm per 300 mm	12	Chamfered	Very Hard	Rockwell C52	Case Hardened	33,000	00000000	000000

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