KLASIFIKASI BAJA SAE - AISI

KLASIFIKASI BAJA SAE – AISI

Clasification	Number	Range of numbers
Carbon steel SAE – AISI     Plain carbon     Free machining ( resulfurized )     Resulfurized , rephosphorized	1XXX 10XX 11XX 12XX	1006 – 1095 1108 – 1151 1211 – 1214
Manganese steel ( 1.5 – 2.0 % )	13XX	1320 – 1340
Molybdenum steel   C – Mo ( 0.25% Mo )   Cr – Mo ( Cr , 0.70 % ; Mo  0.15 % )   Ni – Cr – Mo ( Ni 1.8 % ; Cr 0.65 % )   Ni – Mo ( 1.75 % Ni )   Ni – Cr ( 0.45 % ) ; Mo  0.2 % )   Ni – Mo ( Ni 3.5 % ; Mo 0.25 % )	4XXX 40XX 41XX 43XX 46XX 47XX 48XX	4024 – 4068 4130 – 4150 4317 – 4340 4608 – 4640 4812 – 4820
Chromium steel    0.5 % Cr    1.0 % Cr    1.5 % Cr Corrosion – heat resistant	5XXX 50XX 51XX 52XXX 514XX	5120 – 5152 52095 – 52101 ( AISI 400 series )
Chromium – Vanadium steel 1 % Cr , - 0.12 V	6XXX 61XX	6120 – 6152
Silicon – Manganese steel 2 % Si , - 0.85 % Mn	92XX	9255 – 9262
Triple – alloy steels    0.55 % Ni , 0.50 % Cr , 0.20 % Mo    0.55 % Ni , 0.50 % Cr , 0.25 % Mo    3.25 % Ni , 1.20 % Cr , 0.12 % Mo    0.45 % Ni , 0.40 % Cr , 0.12 % Mo    0.45 % Ni , 0.15 % Cr , 0.20 % Mo    1.00 % Ni , 0.80 % Cr , 0.25 % Mo	86XX 87XX 93XX 94XX 97XX 98XX	8615 – 8660 8720 – 8750 9310 – 9317 9437 – 9445 9747 – 9763 9840 – 9850
Boron steel ( about 0.005 % Mn )	XXBXX

            Boron is denoted by addition of B. Boron – Vanadium is denoted by the addition of BV. Examples : 14BXX , 50BXX , 80BXX , 43BV14 the letters appearing before the number indicate the following : A = alloy basic open hearth : B = carbon – acid Bessemer : C = carbon – basic open hearth : D = carbon – acid open hearth : E = electric furnace.

Stainless and Heat resisting steels :

2XX Chromium – Nickel – Manganese types

3XX Chromium – Nickel types

4XX Straight Chromium types

5XX Low chromium types    

All stainless steels are produced in the electric furnace.