EDRO P1FM #31 Free Machining Holder Steel

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EDRO P1FM #31 Free Machining Holder Steel
Categories:	Metal; Ferrous Metal; Alloy Steel
Material Notes:	EDRO #31 P1-FM is a free machining low alloy steel supplied prehardened to 262-321 HB. P1-FM is characterized by excellent machinability, uniform and consistent hardness in all dimensions, good resistance to indentation (compressive strength), excellent ductility, excellent flatness, dimensionally stable, smooth as rolled surfaces, weldable, and excellent thermal conductivity. P1-FM is an improved grade designed specifically for plastic and rubber molding applications. Chemical composition and thermal treatments provide physical properties and microstructures designed to provide reduced mold maintenance costs, safe weld repair, dimensional stability, and lower mold production costs due to less cutting tool wear and increased cutting speeds. Applications: plastic and rubber molds, plastic mold bases, constructional parts, plastic extrusion Information provided by EDRO
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Physical Properties	Original Value	Comments

Density	0.282 lb/in³ @Temperature 199 °C	Prehardened to 293 HB
	0.284 lb/in³ @Temperature 20.0 °C	Prehardened to 293 HB

Mechanical Properties	Original Value	Comments
Hardness, Brinell	293
Tensile Strength, Ultimate	137000 psi @Temperature 20.0 °C	Longitudinal Tests from 3" rolled plate at 293 HB
Tensile Strength, Yield	116000 psi @Strain 0.2 %, Temperature 20.0 °C	Longitudinal Tests from 3" rolled plate at 293 HB
Elongation at Yield	18 % @Temperature 20.0 °C	in 2"
Reduction of Area	58 % @Temperature 20.0 °C
Modulus of Elasticity	27000 ksi @Temperature 199 °C
	30000 ksi @Temperature 20.0 °C
Charpy Impact	35.0 ft-lb @Temperature 20.0 °C	Longitudinal Charpy V-notch Tests from a 3" rolled plate at 293 HB
	55.0 ft-lb @Temperature 300 °C	Longitudinal Charpy V-notch Tests from a 3" rolled plate at 293 HB

Thermal Properties	Original Value	Comments
CTE, linear	6.10 µin/in-°F @Temperature 20.0 - 199 °C

Descriptive Properties
Color Code	Blue Red Stripe

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NSEDRO003 / 142940

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