Special Metals
Material: Stainless Steel ꞏ Channels: ASTM A 240 (Type 304) ꞏ Sintered nuts: ASTM B783 (Type SS316N1-25) ꞏ Fittings:
Load Data (Slip & Pull Out): Extruded Aluminum ꞏ To determine nut slip resistance, multiply load data for appropriate nut by 75%. To determine nut pull-out load, multiply load data for appropriate nut by 50%. Stainless Steel ꞏ For design assistance, consult Unistrut customer engineering. Product Availability: Most fittings and channels shown in this catalog, are available in aluminum or stainless steel. Consult factory for ordering information. Dimensions: Imperial dimensions are illustrated in inches. Metric dimensions are shown in parenthesis or as noted. Unless noted, all metric dimensions are in millimeters and rounded to one decimal place.
ASTM A240 (Type 304 or Type 316) or ASTM A276 (Type 304 or Type 316) Contact factory for specific material availability.
Aluminum ꞏ Channels (Extruded): ASTM B221 (Type 6063-T6) ꞏ Fittings: ASTM B209 (Type 1100F or Type 5052-H32) ꞏ Nuts: Stainless steel nuts are recommended for Aluminum channel
Material/Finish
Part Number Suffix
Example P1109 SS P1109 ST
Stainless Steel Type 304 Stainless Steel Type 316
SS ST
LOAD DATA (BEAM & COLUMN): To determine maximum allowable beam and column loading for channels in this section, multiply the load data in the appropriate mild steel channel sections of this catalog by the following factors:
Channel Material Extruded Aluminum
Beam Load % Factor
Column Load % Factor
33%
33%
Stainless Steel
100%
100%
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