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Brett Bellmore · April 23, 2001, 10:06 AM

4340 properties, according to http://www.macsteel.com/mdb/general_...loy_steels.htm

Normalized, tensile strength 185,500 psi, yield strength 125,000 psi, elongation 12.2%, Brinell hardness 363

8-1-1 properties, according to
http://www.matweb.com/SpecificMateri...&group=General

Anealed and aged. Tensile strength 147,900 psi, yield strength 130,500 psi, elongation 13%, hardness ?

Heat treated, tensile strength 171,100 psi, yield strength 155,200 psi, elongation 17%

Think I might just use this chunk, but get it heat treated.

April 23, 2001, 10:06 AM	#5
Brett Bellmore Senior Member Join Date: March 17, 1999 Location: Capac, MI, USA Posts: 1,927	4340 properties, according to http://www.macsteel.com/mdb/general_...loy_steels.htm Normalized, tensile strength 185,500 psi, yield strength 125,000 psi, elongation 12.2%, Brinell hardness 363 8-1-1 properties, according to http://www.matweb.com/SpecificMateri...&group=General Anealed and aged. Tensile strength 147,900 psi, yield strength 130,500 psi, elongation 13%, hardness ? Heat treated, tensile strength 171,100 psi, yield strength 155,200 psi, elongation 17% Think I might just use this chunk, but get it heat treated. __________________ Sic semper tyrannis!