Carbon and Alloy Steel Chemical Composition Specification Table Chart

Carbon and Alloy Steel Chemical Composition Specification Table Chart - Engineers Edge

Metals and Materials Table of Contents

Table of steel composition and related specifications. Additionally, SAE ASTM and AISI common carbon and alloy steel refereces and typical applications data is given

Chart derived from SAE/ASTM/AISI Steel Materials

UNS	Number (SAE/AISI)	Type of Steel	Description
G10xx0	10xx	Carbon	C, Mn, P, S
G11xx0	11xx	Carbon	C, Mn, P, S
G13xx0	13xx	Manganese	1.75% Mn
G23xx0	23xx	Nickel Steels	3.50% Ni
G25xx0	25xx	Nickel Steel	5.00% Ni
G31xx0	31xx	Nickel-Chromium	1.25% Ni & .65% Cr
G33xx0	33xx	Nickel-Chromium	3.00%Ni & 1.57% Cr.
	303xx	Nickel-Chromium	Corrosion & Heat Resistant
G40xx0	40x	Molybdenum	.25% Mo
G41xx00	41xx	Molybdenum	.95% Cr
G43xx0	43xx	Nickel-Chromium-Moldb	1.82% Ni,.50% Cr, .25% Mo
G47xx0	47xx	Nickel-Chromium-Moldb	1.05%Ni, .45%Cr, .20%Mo
G86xx0	86xx	Nickel-Chromium-Moldb	.55%Ni, .50%Cr, .20%Mo
G87xx0	87xx	Nickel-Chromium-Moldb	.55%Ni, .50%Cr, .25%Mo
G93xx0	93xx	Nickel-Chromium-Moldb	3.25%Ni, 1.20%Cr, .12%Mo
G98xx0	98xx	Nickel-Chromium-Moldb	1.00%Ni, .80%Cr, .25%Mo
G46xx0	46xx	Nickel-Moldb	1.57%Ni, .20%Mo
G48xx0	48xx	Nickel-Moldb	350%Bi, 0.25% Mo
G50xx	50xx	Chromium	.27-.50%Cr, Low Chromium
G51xx0	51xx	Chromium	.80-1.05%Cr, Low Chromium
	51xxx	Chromium	1.02&Cr, Medium Chromium
G52xx0	52xxx	Chromium	1.45% Cr, High Chromium
	514xx	Chromium	Corrosion & Heat Chromium
G61xx0	61xx	Chromium-Vanadium	.95% Cr, 0.15
G92xx0	92xx	Silicon-Manganese	.65-.87% Mn, .85-2.00% Si

General: Carbon steels are regarded as steels containing not more than 0,5% manganese and 0,5% silicon, all other steels being regarded as alloy steels.

Common Stock Steel

General Purpose

1010 - General purpose steel. Good weldability and forming and extruding chrematistics. Often used for general structural and automotive bodies.

1015 - General purpose low carbon plate with predictable qualities. Has excellent welding and bending properties. Structural applications.

1020 - Good general purpose low carbon plate. Good machinability and formability. Used in automotive camshafts and similar applications.

1025 - Plate. Higher carbon plate for greater strength. Has optimal combination of strength, weldability and good form retaining after machining.

1045 Medium carbon steel. often used for bolts, studs and shaft parts. High strength and hardness.

Hot Rolled Carbon Steel

1018, 1020 (HR,CF) - Low carbon steel. Has good hardening properties, fair machinability. Readily brazed and welded.

1117 (HR,CF) - Low carbon, high manganese steel. Good machinability, case hardening is deep and uniform. Good for bending, broaching and most deforming without cracking.

Medium Carbon - Direct Hardening

1035 (HR) - Intermediate carbon higher in strength and hardness than low carbon steel. Used for studs, bolts etc.

1040, 1045 (HR,CF) - Used when greater strength and hardness is desired in the as rolled condition. Good for hammer forge processes. Uses include gears, shafts, axles, bolts sand studs.

1050 (CF) - Strain hardened, stress relieved material typically 100 KSI yield strength.

1141 (HR,CF) - Improved machinability and better heat treatment response (surface hardness is deeper and more uniform) than plain carbon steels. Uses include gears, shafts, axles, bolts, studs, pins, etc.

Screw Stock

1215 (HR,CF) - Fast cutting steel is considered the standard screw stock. Cutting speeds and machining characteristics are excellent.

Medium Carbon Alloy Bars - Annealed

4140/4150 - Widely used general purpose alloys, low in cost. A broad range of strength and toughness is attainable through variations in heat treatment. Used for forgings, tubing and fittings

4340 - Highly alloyed steel, nominally 1.8% Ni, .80% chromium and .25% molybdenum. High strength characteristics. Used for heavily stressed parts operating in fatigue and other duty conditions.

See our Material Manufacturing page!