Assab Steels CARMO Cold Work Steel

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Assab Steels CARMO Cold Work Steel
Categories:	Metal; Ferrous Metal; Chrome-moly Steel; Tool Steel; Cold Work Steel
Material Notes:	CARMO is a high-strength, flame-induction and through hardening steel delivered prehardened to 240-270 HB. The surface of the steel can be flame-hardened without water cooling to a hardness of 58±2 HRC. The depth of hardness is normally 4-5 mm and the hardened and tempered matrix is a good base for the flame-hardened layer. The steel can be easily repair welded and has a high wear resistance similar to that of A2. The toughness of CARMO is much better than that for the steel types A2 and D2. CARMO is a cold work tool steel which has been developed together with the automotive industry. Its analysis has been balanced to give one universal tool steel for car body dies instead of the several steel grades (flame hardening and through hardening grades) which are normally used. The steel can be used in the flame-hardened or in the through-hardened condition for blanking and forming of both car body parts (thin sheet) or structural parts (thicker sheet).
Vendors:

Available Properties

Hardness, Rockwell C, Surface hardness. 600°C Tempering temperature, T_A = 960°C
Hardness, Rockwell C, Surface hardness. 400°C Tempering temperature, T_A = 960°C
Hardness, Rockwell C, At 900°C Austenitizing temperature during hardening
Hardness, Rockwell C, Core hardness in air cooling for a diameter of 100 mm.
Hardness, Rockwell C, Core hardness in air cooling for a diameter of 50 mm.
Hardness, Rockwell C, At 960°C Austenitizing temperature during hardening
Hardness, Rockwell C, Surface hardness. 100°C Tempering temperature, T_A = 960°C
Hardness, Rockwell C, Core hardness in air cooling for a diameter of 1-20 mm.
Hardness, Rockwell C, At 1025°C Austenitizing temperature during hardening
Tensile Strength, Ultimate, R_m, @RT, 270 HB.
Tensile Strength, Yield, R_p0.2, @RT, 270 HB.
Elongation at Break
Reduction of Area
Impact Test, RT. 450°C tempering temp. Specimen size: 7x10x55 mm unnotched. Hardened at 960°C. Quenched in air. Tempered twice
Impact Test, RT. 250°C tempering temp. Specimen size: 7x10x55 mm unnotched. Hardened at 960°C. Quenched in air. Tempered twice
Impact Test, RT. 600°C tempering temp. Specimen size: 7x10x55 mm unnotched. Hardened at 960°C. Quenched in air. Tempered twice
CTE, linear, Hardened and tempered to 56 HRC
CTE, linear, Hardened and tempered to 56 HRC
Carbon, C
Chromium, Cr
Iron, Fe
Manganese, Mn
Molybdenum, Mo
Silicon, Si
Vanadium, V

Property Data

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