Stainless Steel and Its Alloys

Stainless Steel and Its Alloys

Ultra-thin at tight tolerances

Arnold’s Precision Thin Metal business provides many types of high quality stainless steel, rolled to precise tolerances for thinness and flatness. Its excellent corrosion resistance and good workability make stainless steel the obvious choice in numerous applications across many markets. From commercial and defence aviation devices to tiny precision instruments and components, to large area solar panels and other energy generation and management apparatus, as well as a range of commercial and automotive uses, Stainless Steel is a versatile choice.

Stainless steel grades are particularly responsive to various heat treatments and can be readily drawn and shaped to provide thin-walled tubing, hypodermic needles, and other precision devices for medical applications.

Arnold offers cold-rolled stainless steel in a number of grades, including those listed below.

Key Applications and Uses

  • Precision hard drive suspension components
  • Solar panel substrates
  • Heat exchangers
  • Pharmaceutical preparation and delivery
  • Chemical processing and handling systems
  • Food preparation and packaging


Available in a range of thicknesses and widths

Arnold cold rolls stainless steel to customer specifications, offering this material in a range of thicknesses and dimensions along with a variety of surface finishes and coatings.

ThicknessMaximum Width
0.01"- 0.0004" (0.254 - 0.01mm)17.5" (444.5mm) as rolled edge 17.0" (431.8mm) with a slit edge
0.00039" - 0.00008" (0.0099 - 0.002mm)4.25" (107.95mm) as rolled edge 4.0" (101.6mm) with a slit edge

Measuring in Microns?

Alloy composition of standard and speciality grades

Arnold’s PTM business produces thin and ultra-thin stainless steel in various grades and tempers. The most common grades requested are listed here.

For each of the alloys listed, the total composition is Iron plus the percentages shown for listed elements.

GradeCMnCrNiOther appreciable elements:Plus no more than 0.10% of these elements:
3040.082.018 - 208 - 12SiN, K, S
304L0.032.018 - 208 - 12SiN, K, S
3160.082.016 - 1810 - 14SiN, K, S
316L0.032.016 - 1810 - 14SiN, K, S
4100.151.011.50 - 13.50---SiK, S
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