CVH (9XC, 9HVG)

For measuring and cutting tools, threaded gauges, broaches, long taps.

measuring and cutting tools, for which increased warping during quenching is unacceptable, thread gauges, broaches, taps long, long reamers and other kind of special tools, Cold-dies and punches, tooling.

Classification

Country Section Category
CIS, Russia, Ukraine Tool steel Alloy tool steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % Ni, % P, % C, % S, % W, %
GOST 5950-2000 93.89–96.1 0.1–0.4 0.8–1.1 0.9–1.2 < 0.3 < 0.4 < 0.03 0.9–1.05 < 0.03 1.2–1.6

Information on suppliers

Physical characteristics

Temperature, °C \alpha\cdot 10^{6}, K^{-1} \rho, \frac{kg}{m^3} R\cdot 10^{-6}, \Omega\cdot m
20 7850 0.38
100 11 7830
200 12
300 13 7760
400 13.5
500 14
600 14.5 7660

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Not applicable for welded structures sensitive loathsome

Critical point temperatures

Ac1, K Ac3(Acm), K Ar1, K Mn, K
750 940 710 210

Analogues

USA Germany Japan France European Union Italy Spain China Sweden Bulgaria Hungary Poland Romania
T31507 1.2419 (105WCr6) SKS2 105WC13 107WCR5 107WCr5KU 105WCR5 CrWMn 2140 ChWG W9 NWC 105MnCrW11

Standards

Standard Description
GOST 5950-2000 GOST

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Cu % Copper
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur
W % Tungsten

Description of physical characteristics

Parameter Units of measurement Description
\alpha\cdot 10^{6} K^{-1} Coefficient of thermal (linear) expansion (range 20°C–T)
\rho \frac{kg}{m^3} The density of the material
R\cdot 10^{-6} \Omega\cdot m Electrical resistivity

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ac3(Acm) K
Ar1 K
Mn K