Would 17-4ph h900 resist snapping better that harded D2 TS?

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The discussion centers on the durability of 17-4 PH stainless steel in comparison to hardened D2 tool steel for manufacturing a pin wrench used in high-speed production applications. The user reports frequent snapping of 0.236 diameter pins made from hardened D2 tool steel, particularly when bent at a 60-degree angle. The consensus suggests that using 17-4 PH stainless steel, specifically in the H900 condition, would significantly reduce the likelihood of snapping due to its superior toughness and corrosion resistance. Participants emphasize the importance of material properties in selecting the appropriate alloy for high-stress applications.

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  • Experience with high-speed production applications and their demands on tooling.
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Fixitman
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Continually breaking a 0.236 dia. pin wrench, tightening a threaded collet-closer in high speed production application. Both ends of 1/2" D2 tool steel, turned down to create pin wrench, one end is bent at 60 degree angle, to allow an awkward reach sometimes necessary. D2 TS is then hardened & tempered. The 0.236 pins snap. Believe using 17-4 ph stainless steel, h900 would eliminate snapping. Can anyone comment?
 
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