AISI SAE Carbon

Steel

AISI-SAE Designation

Nominal Alloy Content (%)

Carbon Steels	10XX	Plain Carbon (Mn 1.00% max.)
	11XX	Resulfurized
	12XX	Resulfurized and Rephosphorized
	15XX	Plain Carbon (Max. Mn range 1.00 to 1.65%)
Manganese Steels	13XX	Mn 1.75
Nickel Steels	23XX	Ni 3.50
Nickel Steels	25XX	Ni 5.00
Nickel-Chromium Steels	31XX	Ni 1.25; Cr 0.65 and 0.80
	32XX	Ni 1.75; Cr 1.07
	33XX	Ni 3.50; Cr 1.50 and 1.57
	34XX	Ni 3.00; Cr 0.77
Molybdenum Steels	40XX	Mo 0.20 and 0.25
Molybdenum Steels	44XX	Mo 0.40 and 0.52
Chromium-Molybdenum Steels	41XX	Cr 0.50, 0.80 and 0.95; Mo 0.12, 0.20, 0.25 and 0.30
Nickel-Chromium-Molybdenum Steels	43XX	Ni 1.82; Cr 0.50 and 0.80; Mo 0.25
	43BVXX	Ni 1.82; Cr 0.50; Mo 0.12 and 0.35; V 0.03 min.
	47XX	Ni 1.05; Cr 0.45; Mo 0.20 and 0.35
	81XX	Ni 0.30; Cr 0.40; Mo 0.12
	86XX	Ni 0.55; Cr 0.50; Mo 0.20
	87XX	Ni 0.55; Cr 0.50; Mo 0.25
	88XX	Ni 0.55; Cr 0.50; Mo 0.35
	93XX	Ni 3.25; Cr 1.20; Mo 0.12
	94XX	Ni 0.45; Cr 0.40; Mo 0.12
	97XX	Ni 0.55; Cr 0.20; Mo 0.20
	98XX	Ni 1.00; Cr 0.80; Mo 0.25
Nickel-Molybdenum Steels	46XX	Ni 0.85 and 1.82; Mo 0.20 and 0.25
Nickel-Molybdenum Steels	48XX	Ni 3.50; Mo 0.25
Chromium Steels	50XX	Cr 0.27, 0.40, 0.50 and 1.05
	51XX	Cr 0.80, 0.87, 0.92, 0.95, 1.00 and 1.05
	50XXX	Cr 0.50; C 1.00 min.
	51XXX	Cr 1.02; C 1.00 min.
	52XX	Cr 1.45; C 1.00 min.
Chromium-Vanadium Steels	61XX	Cr 0.60, 0.80 and 0.95; V 0.10 and 0.15 min.
Tungsten-Chromium Steels	72XX	W 1.75; Cr 0.75
Silicon-Manganese Steels	92XX	Si 1.40 and 2.00; Mn 0.65, 0.82 and 0.85; Cr 0.00 and 0.65
High Strength Low-Alloy Steels	9XX

Taken from Machinery's Handbook-24^th Edition