Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
AISI 4340 - ANNEALED/Q&T<br />
HR<br />
4340 is a highly alloyed steel with high nickel and chromium content which assures<br />
deep hardening when oil quenched, with high strength characteristics throughout the<br />
section. Used for heavily stressed parts operating under strenuous conditions.<br />
TYPICAL ANALYSIS AISI 4340<br />
Carbon (C) .38/.43<br />
Manganese (Mn) .60/.80<br />
Silicon (Si) .15/.35<br />
Molybdenum (Mo) .20/.30<br />
Chromium (Cr) .70/.90<br />
Nickel (Ni) 1.65/2.00<br />
Sulphur (S)<br />
.040 MAX<br />
Phosphorus (P)<br />
.035 MAX<br />
TENSILE STRENGTH<br />
approx. 130,000 lbs psi<br />
YIELD POINT<br />
approx. 100,000 lbs psi<br />
BRINELL HARDNESS 269-321<br />
ROCKWELL C 26-34<br />
ELONGATlON IN 2" 14%<br />
REDUCTION IN AREA 35%<br />
4340 is readily available from Alro Steel. Ask your Alro sales representative about our<br />
in-house services designed to speed up your turnaround time.<br />
8-20
Change language