ASTM A193 material was originally approved in 1936. This Specification is heavily used in petroleum fields and in chemical products applications. The ASTM Standard covers the steel and stainless steel alloys suitable for the fastening of high temperatures materials and also includes the fastening specifications to be used in pressure vessels, valves, flanges and fittings.

ASTM A193 B7 Carbon alloy steel, AISI 4140/4142 quenched and tempered

ASTM A193 B16 CrMoVa alloy steel quenched and tempered

ASTM A193 B8 Class 1 Stainless steel, AISI 304, carbide solution treated.

ASTM A193 B8M Class 1 Stainless steel, AISI 316, carbide solution treated.

ASTM A193 B8 Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened

ASTM A193 B8M Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened

ASTM A193 B8T in acciaio inox AISI 321

ASTM A193 B8C in acciaio inox AISI 347

ASTM A193 B6 in acciaio inox AISI410

>> Contac us for screws, nuts stud, bolts ASTM A193 B7 <<

» MECHANICAL PROPERTIES ASTM A193

Grade	Size	Tensile, Ksi, Min	Yield, ksi, min	Elong, %, min	RA % min
ASTM A193 B7	up to 2-1/2	125	105	16	50
	2-5/8 - 4	115	95	16	50
	4-1/8 - 7	100	75	18	50
ASTM A193 B8 Class 1	all	75	30	30	50
ASTM A193 B8M Class 1	all	75	30	30	50
ASTM A193 B8 Class2	Up to 3/4	125	100	12	35
	7/8 - 1	115	80	15	35
	1-1/8 - 1-1/4	105	65	20	35

»ASTM A193 RECOMMENDED NUTS and WASHERS

Grade	Nuts	Washers
ASTM A193 B7	A194 Grade 2H	F436
ASTM A193 B8 Class 1	A194 Grade 8	SS304
ASTM A193 B8M Class 1	A194 Grade 8M	SS316
ASTM A193 B8 Class 2	A194 Grade 8	SS304
ASTM A193 B8M Class 2	A194 Grade 8M	SS316