Low grade material axle shaft
AssigneeDana Corporation
InventorsKent E. Davison, Ervin M. Rickert
Life of this patent
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Abstract
A new SAE 1541M alloy steel composition consisting essentially of 0.40-0.48% carbon, 1.35-1.61% maganese, 0.16-0.30% silicon, 0-0.23% chromium and the balance iron and other materials not affecting hardenability of the steel, especially adapted for forming axle shafts in the 1.70-2.05" diameter range to be used as drive axles with an axle load carrying capacity between 30,000 and 44,000 pounds.
Claims5
An axle shaft with a rated capacity between 30,000 and 44,000 pounds and a body diameter between 1.70 and 2.05" having been made by forging and machining the ends thereof and induction hardening with no intermediate heat treating between forging and hardening, said composition consisting essentially of 0.40-0.48% carbon, 1.35-1.61% manganese, 0-0.23% silicon, 0-0.23% chromium, 0-0.15% copper, 0-0.20% nickel, 0-0.15% molybdenum, 0.020-0.45% sulfur, 0.025-0.050% aluminum and 0.035% maximum phosphorus, with the balance being iron, and said shaft having a critical diameter of 2.1-2.6".
An alloy composition for forming axle shafts with a body diameter between 1.70 and 2.05" by forging and machining the ends thereof and induction hardening with no intermediate heat treating between forging and hardening, said composition consisting essentially of 0.40-0.48% carbon, 1.35-1.61% manganese, 0-0.23% silicon, 0-0.23% chromium and the balance iron and other materials not affecting the hardenability of the steel said alloy having a critical diameter value of between 2.1 and 2.6" calculated by utilizing the multiplying factors for carbon, manganese, silicon and chromium.
An axle shaft with a rated capacity between 30,000 and 44,000 pounds and a body diameter between 1.70 and 2.05" by forging and machining the ends thereof and induction hardening with no intermediate heat treating between forging and hardening, said composition consisting essentially of 0.40-0.48% carbon, 1.35-1.61% manganese, 0-0.23% silicon, 0-0.23% chromium and the balance iron and other materials not affecting the hardenability of the steel said alloy having a critical diameter value of between 2.1 and 2.6" calculated by utilizing the multiplying factors for carbon, manganese silicon and chromium.
Dependencies are inferred from the claim text.