KDA1S properties

KDA1S

JIS	AISI	WNr	DIN
SKD61	H13	1.2344	1.2344

CHEMICAL COMPOSITION(Typical Analysis %)

C	Si	Mn	P	S	Cr	Cu	Ni	Mo	V
0.34	0.60	0.44	0.21	0.03	4.78	0.08	0.15	1.61	0.51

STEEL PROPERTIES

Hot work tool steel. Secondary hardening steel. Good tempering resistance. It maintains high hardness and strength at elevated temperatures.
Resistance to thermal fatigue, erosion and wear. Very high toughness. Good ductility and hardenability - air cooling. Tools can be water cooled

PHYSICAL PROPERTIES

Thermal coductivity W/(m.K) 20°C/25 500°C/28.5 600°C/29.3
Density g/cm³ 20°C/7.78 400°C/7.64 600°C/7.60

Coefficient of linear thermal expansion

10^-6 °C^-1	20-100°C	20-200°C	20-300°C	20-400°C	20-500°C	20-600°C	20-700°C	20-800°C
10^-6 °C^-1	10.7	11.9	12.2	12.5	12.7	13.1	13.5	13.7

APPLICATIONS

Wear resisting tools, pressure die casting tools, pressing tools for light and heavy metal.
For the highest requirement we recommend UTOPMO2 ESR EFS

HEAT TREATMENT

SOFT ANNEALING(°C)	COOLING	HARDNESS (HB)
760-810	FURNACE	MAX. 229

HARDENING FROM(°C)	IN	HARDNESS AFTER QUENCHING (HRC)
1020-1080	OIL, AIR, THERMAL BATH 450-550°C	52-56

TEMPERING (°C)	1000	1040	1080	1120	1140	1160	1180
HARDNESS (HRC)	57	59	61	63	64	65	65.5
(N/mm²)	1790	1730	1790	1910	1845	1680	1360

NITROCARBURISING AT 570°C X 2HRS (51 %NH³, 43%N², 1% Propane)

HRC AT COMPOUND LAYER	THICKNESS OF COMPOUND LAYER	THICKNESS OF CASE DEPTH	CORE HARDNESS (HRC)
69	5 - 6µm	190µm	48

KDA1S

KDA1S

TEMPERING DIAGRAM

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