DESCRIPTION
Type 18 SR Stainless Steel provides excellent resistance to high-temperature scaling. 18SR is readily welded by conventional methods. It is not subject to embrittlement or loss of corrosion resistance in the heat-affected zones that affects many other straight chromium alloys. This alloy is especially valuable for applications requiring high-temperature scaling resistance superior to Types 409, 430 and 304 stainless steels and for those applications where Types 442 and 446 give only marginal protection.
PRODUCT FORMS
Sheet, Strip
SPECIFICATIONS
ASTM A 167 and ASTM A240
TYPICAL APPLICATIONS
Industrial ovens, blowers, exhaust systems, furnace equipment, heaters, induction furnaces and furnace tubes, annealing boxes, baffle plates, heat exchangers, resistor grids, kiln liners and pyrometer tubes.
CORROSION
18 SR Stainless Steel provides corrosion resistance comparable to other ferritic 18% Cr stainless alloys and approaches Type 304 in many aqueous media.
Type | Yield Strength 0.2% offset (KSI) | Tensile Strength (KSI) | % Elongation (2” Gauge Length) |
18SR | 56 min. | 78 min | 30 min. |
Element | Type 18SR |
Carbon | 0.015 max. |
Manganese | 0.30 max. |
Chromium | 17.30 |
Nickel | 0.25 |
Titanium | 0.25 |
Aluminum | 1.7 |
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