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CNC Machining Materials

Stainless Steel

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At a glance

Processes

CNC Mill
CNC Lathe

Lead Time

As fast as 7 days

Finishing Options

Black Oxide, Electropolishing, ENP, Media Blasting, Nickel Plating, Passivation, Powder Coating, Tumble Polishing, Zinc Plating, Vibratory Tumbling

Tolerance

With drawing: as low as +/- 0.005 mm
No drawing: ISO 2768 medium

Price

$$$

Applications

Industrial applications, fittings, fasteners, cookware, medical devices

Alloys

303, 304L, 316L, 410, 416, 440C, 17-4PH, Nitronic 60

About the Material

Stainless steel is highly resistant to corrosion and rust, making it suitable for situations where a part may be exposed to the elements for a long period of time. Stainless steel is also fairly malleable and ductile. Fictiv offers multiple stainless steel alloys, including a food-safe variety.

Material Properties

303 Stainless Steel

Yield Strength (tensile)

35,000 psi

Elongation at Break

42.5%

Hardness

Rockwell B95

Density

0.29 lbs / cu. in.

Maximum Temp

2550° F

304L Stainless Steel

Yield Strength (tensile)

30,000 psi

Elongation at Break

50%

Hardness

Rockwell B80 (medium)

Density

0.29 lbs / cu. in.

Maximum Temp

1500° F

316L Stainless Steel

Yield Strength (tensile)

30,000 psi

Elongation at Break

39%

Hardness

Rockwell B95

Density

0.29 lbs / cu. in.

Maximum Temp

1500° F

410 Stainless Steel

Yield Strength (tensile)

65,000 psi

Elongation at Break

30%

Hardness

Rockwell B90

Density

0.28 lbs / cu. in.

Maximum Temp

1200° F

416 Stainless Steel

Yield Strength (tensile)

75,000 psi

Elongation at Break

22.5%

Hardness

Rockwell B80

Density

0.28 lbs / cu. in.

Maximum Temp

1200° F

440C Stainless Steel

Yield Strength (tensile)

110,000 psi

Elongation at Break

8%

Hardness

Rockwell C20

Density

0.28 lbs / cu. in.

Maximum Temp

800° F

17-4PH Stainless Steel

Yield Strength (tensile)

160,000 psi

Elongation at Break

7%

Hardness

Rockwell C35

Density

0.28 lbs./cu. in.

Maximum Temp

1100°F

Nitronic 60

Yield Strength (tensile)

50,000 psi

Elongation at Break

35%

Hardness

Rockwell B85

Density

0.28 lbs./cu. in.

Maximum Temp

1800°F

15-5 PH Stainless Steel

Yield Strength (tensile)

145,000 PSI

Elongation at Break

15%

Hardness

Rockwell C31

Density

7.8 g/cm^3
0.28lb / in^3

Maximum Temp

1100°F

420 Stainless Steel

Yield Strength (tensile)

40,000 PSI

Elongation at Break

25%

Hardness

Rockwell C25

Density

7.8 g/cm^3
0.28lb / in^3

Maximum Temp

1150°F

A286 Stainless Steel

Yield Strength (tensile)

95,000 PSI

Elongation at Break

40%

Hardness

Rockwell B90

Density

7.92 g/cm^3
0.29lb / in^3

Maximum Temp

1500°F

17-4 PH Stainless Steel (H900 Temper)

Yield Strength (tensile)

170,000 PSI

Elongation at Break

10%

Hardness

Rockwell C40

Density

8 g/cm^3
0.29lb / in^3

Maximum Temp

1100°F

17-4 PH Stainless Steel (H1150 Temper)

Yield Strength (tensile)

105,000 PSI

Elongation at Break

10%

Hardness

Rockwell C28

Density

8 g/cm^3
0.29lb / in^3

Maximum Temp

1100°F

Material Finish

The finish of stainless steel varies greatly depending on surface roughness, but it’s generally characterized as being more shiny than unfinished aluminum alloys, and slightly darker and more silver in color.

Stainless steel can also be media-blasted, sanded, hand-polished, and powder coated to achieve a multitude of surface finishes.

Design Recommendations

Min Wall Thickness

0.5 mm

Min End Mill Size

0.8 mm (0.03 in)

Min Drill Size

0.5 mm (0.02 in)

Max Part Size

1200 x 500 x 152 mm [x,y,z] (mill)
152 x 394 mm [d,h] (lathe)

Undercuts

Square profile, full radius, dovetail profiles

Radii : Depth

Depth must not exceed 12x drill bit diameter.
For end mills, depth must not exceed 10x tool diameter.

Cost Saving Tip

To reduce costs, limit the number of part setups, the number of inspection dimensions or tight tolerances, and deep pockets with small radii.

Stainless Steel FAQs

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