Stainless Steel Screws, bending yield strength

[Ken5]

NDS 2001 has lateral design equations for screws in wood that use fastener bending yield strength. But NDS only references typical bending yield strengths for carbon steel. We use lots of #8 thru #12 screws of 304 stainless steel.
The SSINA.com Stainless Steel Fastener manual, Table 3 says 304 "cold worked" tensile yield = 50ksi, and 304 "strain hardened" tensile yield = 100ksi. Where do ordinary 304 SS roll thread SMS & WS fit into this for bending yield strength?

 

[RARWOOD]

Try posting your question on the Welding Bonding & Fastener engineering forum. Also contact Simposn Strong-Tie they sell stainless steel fasteners for use in their hangers.

 

[Ken5]

Got our screw supplier to subsidize a test program roughly following ICC-ES AC120-05' sec 4.2 and ASTM F1575. The stainless steel type A SMS had 79 to 83% of the presumptive bending yield strengths of carbon steel wood screws listed in AFPA-NDS-2001'. Also tested some hardened carbon steel type A SMS, which had 110 to 128% of those wood screw strengths. Done.