Assab Steels 8407 2M Hot Work Steel

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Assab Steels 8407 2M Hot Work Steel
Categories:	Metal; Ferrous Metal; Chrome-moly Steel; Tool Steel; Hot Work Steel
Material Notes:	ASSAB 8407 is a chromium-molybdenum-vanadium-alloyed steel which is characterized by: Good resistance to abrasion at both low and high temperatures. High level of toughness and ductility Uniform and high level of machinability and polishability Good high-temperature strength and resistance to thermal fatigue. Excellent through-hardening properties Very limited distortion during hardening. Applications: Tools for Extrusion: Dies, backers, die holders, liners, dummy blocks, stems. Plastic molding applications: Injection molding of thermoplastics: long production runs. Molding of parts in thermosetting plastic with finish requirements. AISI H13, W.-Nr. 1.2344
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Physical Properties	Original Value	Comments

Density	0.281 lb/in³
	0.272 lb/in³ @Temperature 800 °C
	0.277 lb/in³ @Temperature 400 °C

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	31	holding time 100 hours at 600°C. Austenitizing temperature 1020°C
	43	holding time 10 hours at 600°C. Austenitizing temperature 1020°C
	43	holding time 100 hours at 550°C. Austenitizing temperature 1020°C
	46	tempering temperature 600°C. Austenitizing temperature 1020°C
	51	holding time 10 hours at 500°C. Austenitizing temperature 1020°C
	51	holding time 10 hours at 550°C. Austenitizing temperature 1020°C
	51	holding time 1 hour at 600°C. Austenitizing temperature 1020°C
	48 - 54	Hardness before tempering. Austenitizing temperature: 1000°C. Soaking time 45 minutes.
	50 - 56	Hardness before tempering. Austenitizing temperature: 1020°C. Soaking time 30 minutes.
	53	holding time 10 hours at 500°C tempering temperature
	53	holding time 1 hour at 550°C. Austenitizing temperature 1020°C
	54	holding time 1 hour at 500°C tempering temperature
	54	Taken from tempering graph. At tempering temperature 300°C. Austenitizing temperature 1020°C
Tensile Strength at Break	285 MPa @Temperature 700 °C	R_m. Austenitizing temp. 1020°C. Tempering temp. 610°C
	930 MPa @Temperature 550 °C	R_m. Austenitizing temp. 1020°C. Tempering temp. 610°C
Tensile Strength, Ultimate	1420 MPa	R_m. 45 HRC.
	1820 MPa	R_m. 52 HRC.
Tensile Strength, Yield	1280 MPa	R_p02. 45 HRC.
	1520 MPa	R_p02. 52 HRC.
	150 MPa @Temperature 700 °C	R_p02
	720 MPa @Temperature 550 °C	R_p02
Modulus of Elasticity	202.5 GPa
	130 GPa @Temperature 800 °C
	175 GPa @Temperature 400 °C
Impact Test	14.0 J	During tempering at 550°C tempering temperature (2h + 2h)
	20.0 J	During tempering at 250°C tempering temperature (2h + 2h)
	22.0 J	During tempering at 650°C tempering temperature (2h + 2h)

Thermal Properties	Original Value	Comments
CTE, linear	12.6 µm/m-°C @Temperature 20.0 - 400 °C
	13.9 µm/m-°C @Temperature 20.0 - 800 °C
Thermal Conductivity	24.6 W/m-K @Temperature 20.0 °C
	26.2 W/m-K @Temperature 400 °C
	27.6 W/m-K @Temperature 800 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.39 %
Chromium, Cr	5.3 %
Iron, Fe	90.71 %
Manganese, Mn	0.40 %
Molybdenum, Mo	1.3 %
Silicon, Si	1.0 %
Vanadium, V	0.90 %

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NASSAB15 / 15033

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