General Purpose Steel Grade Chart

AISI 1015 GENERAL PURPOSE STEELS AISI 1020 AISI 1025 ASTM A283 STRUCTURAL STEELS

HSLA STRUCTURAL STEELS

100 100

101

ASTM A572-50 High strength-low alloy steel, also known as EX-TEN 50. 50 KSI minimum yield. ASTM A441 Offers 50 KSI minimum yield, plus increased corrosion resistance (two times more than carbon steel). AKA TRI-TEN.

124

ASTM A242

Resistance to atmospheric corrosion four times greater than carbon 8 steel. Excellent paint adhesion. AKA COR-TEN A. Similar to A242, but has modified chemistry. Atmospheric corrosion is four times better than carbon steel. AKA CORTEN B.

138

Lowest in cost with two times the corrosion resistance of carbon steel. Also known as T-1 Type A & NAX. Modification of A514-B chemistry to obtain the minimum mechanical properties in thicknesses over 1-1/4". AKA T-1 Type B. Higher alloy modification offering 100KSI minimum yield strength thru 2 1/2" thickness and four times corrosion resistance of carbon steel. Also known as T-1. Higher alloy modification offering 100KSI minimum yield strength 320 thru 6" thickness'. Also known as T-1 Type C.

250

ASTM A36

ASTM A514-B ASTM A514-H

ASTM A514-F

ASTM A514-Q

ASTM A285-C

PRESSURE VESSEL STEELS

100

General purpose, low-cost structural quality plate. Satisfactory machining and welding characteristics. Higher mechanical properties than A283. Silicon killed in heavier thicknesses for internal soundness. Good weld-ability

ASTM A588A

ALLOY STRUCTURAL STEELS

Lowest carbon content for superior cold forming and weldability. Carbon content improves machine-ability. Good forming and welding. Higher carbon content further improves machine-ability and machined surface finish.

100

125

138

270

310

320

Popular, moderate strength steel for stationary service vessels and boilers. Excellent forming and welding properties. ASTM A515-70 Silicon killed carbon steel plate designed for intermediate and high temperature service. Coarse grained. As rolled through 2". ASTM A516-70 Carbon-manganese-silicon steel plate for moderate and lower temperature service in PV. Improved notch toughness.

130

ASTM A517-F

280

Same as A514-F, but produced to PVQ for endurance under thermal and mechanical stress. Thickness' to 2.5". ASTM A387-G11 Chromium-molybdenum alloy steel plate intended primarily for boiler and pressure vessels designed for high temperature service. Annealed Chromium-molybdenum alloy steel plate intended primarily ASTM A387-G22 for boiler and pressure vessels designed for high temperature Norm. & Temp. service. Similar to grade 11 except for higher levels of chromium and molybdenum.

ABRASION RESISTANT STEELS

AR235 AR400

A high carbon and manganese abrasion resistant steel. Approximately 235 BHN. Weldable with low hydrogen rod. Heat treated, quenched and tempered AR plate. Used where

135

156

200 245

AR500 FORM. AR400 FORM. AR500 ALTALLOY

impact or sliding abrasion materials require tougher and harder steels to improve equipment life. Approx. 400 BHN. AKA XAR Same as AR400, except hardness of approx. 500 BHN Same as AR400, except with improved formability. Same as AR500, except with improved formability. Similar to AR500 with the addition of Nickel, Molybdenum and chromium for added abrasion resistance and toughness.

275 245 275 415