DIN 120WV4 Steel Bar

DIN 120WV4 Tool Steel CHEMICAL COMPOSITION:

C : 1,15 - 1,25; Mn 0,20 -0,35 ; Si 0,15 – 0,30 ; P MAX. 0,035 ; S MAX. 0,035 ; Cr 0,15 – 0,25 ; V 0,07 – 0,12 ; W 0,90 – 1,10

DELIVERY : HEAT TREATMENT ANNEALED 219 / 223 HB

SURFACE FINISHING : CENTERLESS GROUND

DIAMETERS : FROM 1mm TO 30mm ON RISING RANGE OF 0,25mm AND USUAL IMPERIAL SIZES.

DIAMETER TOLERANCE : AS PER DIN 175 OR EQUIVALENT ISO h9 .

AS PER REQUIREMENT WITH TOLERANCES h 8 OR h 7

DELIVERY LENGTHS: 1000MM-6000MM

QUALITY : HIGH PRECISION EN SIZES ; OPTIMAL MACHINABILITY ON ANNEALEAD STATUS; DEFECTS AND DECABURISATION FREE ; EXCELENT FINISHING AND STRAIGHTNESS.

HEAT TREATMENT:

TEMPERATURE ADVISED ON CELSIUS DEGREES.

TEMPER TEMPERATURE : 760 – 820 C . 800 – 840 (recommended for Controlled Atmosphere furnaces )

MEAN OF COOLING:

Diam > or equal to 12mm WATER (20 TO 30 C )

Diam < or equal to 12MM OIL (50 TO 60 C)

HARDNESS AFTER TEMPER : 64 – 66 RC

TEMPERED AND QUENCHED : WE SUGGEST TO TREAT PIECES IMMEDIATELY AFTER FAST COOLING TO ELIMINATE TEMPER STRESS.

QUENCHED TEMPER : CHANGE FROM 100 TO 400 C DEPENDING ASKED HARDNESS ON STATUS OF USE.

GRADES : 100 C 200 C 300 C 400 C

RC : 65 62 57 51

REFFERED TO A TRANSVERSAL ROUND SECTION 30mm AND 30 MINUTES OF QUENCHED.

PROTECTION: SLIGHT RUSTPROOF OIL