The table below provides maximum allowable stress values at given temperatures for various Alloy 20 materials. All tabulated values are in accordance with ASME BPVC Section II Part D.

Temp. °F	-20 to 100	200	300	400	500	600	650	700	750	800
MAS1, ksi	22.9	22.9	22.6	22.2	22.1	22.1	22.0	21.9	21.8	21.8
MAS2, ksi	22.9	20.6	19.7	18.9	18.2	17.7	17.5	17.4	17.2	16.8
MAS3, ksi	19.4	17.5	16.7	16.1	15.5	15.0	14.9	14.8	14.6	14.3
MAS4, ksi	19.4	19.4	19.2	18.8	18.8	18.8	18.7	18.6	18.5	18.5

*Temp.: metal temperature, not exceeding.
*MAS₁, MAS₂, MAS₃, MAS₄: maximum allowable stress of different product forms/conditions of Alloy 20.
*Group MAS₁: ASTM B462 UNS N08020 forgings, annealed; ASTM B463 UNS N08020 plate, annealed; ASTM B473 UNS N08020 bar, annealed; ASTM B729 UNS N08020 seamless pipe & tube, annealed; ASTM B464 UNS N08020 welded pipe, annealed; ASTM B468 UNS N08020 welded tube, annealed; ASTM B366 UNS N08020 seamless & welded fittings, annealed,
*Group MAS₂: ASTM B462 Alloy 20 forgings, annealed; ASTM B463 Alloy 20 plate, annealed; ASTM B473 Alloy 20 bar, annealed; ASTM B729 UNS Alloy 20 seamless pipe & tube, annealed.
*Group MAS₃: ASTM B464 UNS N08020 welded pipe, annealed; ASTM B468 UNS N08020 welded tube, annealed.
*Group MAS₄: ASTM B464 Alloy 20 welded pipe, annealed; ASTM B468 Alloy 20 welded tube, annealed.