ASTM A105 Flange Material Specification

ASTM‎‏ A105 covers wrought carbon steel piping components for use in ambient and elevated temperatures in pressurized systems. This includes flanges, fittings, valves and similar parts.

Forgings made to this specification have a maximum weight of 4540kg (10,000lb). Larger forgings may be ordered to specification ASTM‎‏ A266.

ASTM A105 specification does not apply to raw materials used for the production of round bars and seamless tubes for piping components.

Heat Treatment

Heat treatment is not a mandatory requirement for ASTM A105 piping components. However, there are some exceptions: ASME B16.5 flanges Class 400, 900, 1500, 2500; Special design flanges where the design pressure at the design temperature exceeds the pressure-temperature classifications of Class 300; Special design flanges where the design pressure or temperature is not known; Forged fittings or valve parts over NPS 4 and Class‎‏ 300.

Referenced documents

In addition to those reference documents listed in specification a961/a961m, the following list of standards apply to ASTM‎‏ A105 specification:

ASTM standards

• A266 specification for carbon steel forgings for pressure vessel components
• A675 specification for steel bars, carbon, hot- wrought, special quality, mechanical properties
• A696 specification for steel bars, carbon, hot-wrought or cold-finished, special quality, for Pressure piping com- ponents
• A788 specification for steel forgings, general re- quirements
• A961 specification for common requirements for steel flanges, forged fittings, valves, and parts for piping applications

MSS standard

• SP 44 standard for steel pipe line flanges

ASME standards

• B16.5 dimensional standards for steel pipe flanges and flanged fittings
• B16.9 wrought steel buttwelding fittings
• B16.10 face-to-face and end-to-end dimensions of ferrous valves
• B16.11 forged steel fittings, socket weld, and threaded
• B16.34 valves-flanged, threaded and welding end
• B16.47 large diameter steel flanges

ASME boiler and pressure vessel code

• Section ix

API standards

• API-600 flanged and butt-welding-end steel gate valves
• API-602 compact design carbon steel gate valves for refinery use

Frequently used ASTM Grades

Material	Pipes	Fittings	Flanges	Valves	Bolts & Nuts
Carbon Steel	A106 Gr A	A234 Gr WPA	A105	A216 Gr WCB	A193 Gr B7 A194 Gr 2H
	A106 Gr B	A234 Gr WPB	A105	A216 Gr WCB
	A106 Gr C	A234 Gr WPC	A105	A216 Gr WCB
Carbon Steel Alloy High-Temp	A335 Gr P1	A234 Gr WP1	A182 Gr F1	A217 Gr WC1	A193 Gr B7 A194 Gr 2H
	A335 Gr P11	A234 Gr WP11	A182 Gr F11	A217 Gr WC6
	A335 Gr P12	A234 Gr WP12	A182 Gr F12	A217 Gr WC6
	A335 Gr P22	A234 Gr WP22	A182 Gr F22	A217 Gr WC9
	A335 Gr P5	A234 Gr WP5	A182 Gr F5	A217 Gr C5
	A335 Gr P9	A234 Gr WP9	A182 Gr F9	A217 Gr C12
Carbon Steel Alloy Low-Temp	A333 Gr 6	A420 Gr WPL6	A350 Gr LF2	A352 Gr LCB	A320 Gr L7 A194 Gr 7
	A333 Gr 3	A420 Gr WPL3	A350 Gr LF3	A352 Gr LC3
Austenitic Stainless Steel	A312 Gr TP304	A403 Gr WP304	A182 Gr F304	A182 Gr F304	A193 Gr B8 A194 Gr 8
	A312 Gr TP316	A403 Gr WP316	A182 Gr F316	A182 Gr F316
	A312 Gr TP321	A403 Gr WP321	A182 Gr F321	A182 Gr F321
	A312 Gr TP347	A403 Gr WP347	A182 Gr F347	A182 Gr F347

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