Metals -> High-temperature or heat-resistant steel and alloy -> Relaxation-resistant steel Characteristics of the material 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ).
Material : 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ) Classification : Relaxation-resistant steel
Chemical composition in % of the material 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ) . C Si Mn Ni S P Cr Mo W V Cu 0.15 - 0.23 0.17 - 0.37 0.25 - 0.5 max 0.3 max 0.025 max 0.03 2.8 - 3.3 0.35 - 0.55 0.3 - 0.5 0.6 - 0.85 max 0.2
Temperature of critical points of the grade 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ).
Ac1 = 800 - 830 , Ac3 (Acm ) = 900 - 950 , Ar3 (Arcm ) = 790 - 800 , Ar1 = 680 - 700
Mechanical properties under Ò=20o Ñ of the material 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ) .
Assortment
Dimension
Direct.
s â
s T
d 5
y
KCU
Heat treatment - mm - MPa MPa % % kJ / m2 - Bar, band longitudinal 900 750 12 40 600 Guenching 1030 - 1060o C, oil, Drawing 660 - 700o C, Arbor, rotor longitudinal 750 650 13 40 500 Guenching 1030 - 1060o C, oil, Drawing 660 - 700o C, Arbor, rotor tangent 730 620 11 32 400 Guenching 1030 - 1060o C, oil, Drawing 660 - 700o C,
Brinell hardness of the material 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ) (hot-rolled, annealing) , HB 10 -1 = 269 MPa
Physical properties of the material 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ) . T E 10- 5 a 10 6 l r C R 10 9 Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m 20 2.07 38.5 7800 100 2.04 10.6 35.6 502 398 200 2 11.5 33.1 560 465 300 1.93 11.8 31.4 610 544 400 1.86 12.1 30.6 7690 650 640 500 1.82 12.6 29.7 7660 710 743 600 1.77 13 29.3 7620 750 859 700 1.71 28.9 982 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 20KH3MVF ( 20H3MVF, 20Õ3ÌÂÔ ) . Weldability: limited weldability.
Specification :
Mechanical properties :
s â - Tensile strength , [MPa]
s T - Yield stress, [MPa]
d 5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2 ]
HB - Brinell hardness , [MPa]
Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion
(range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(m·Grade)]
r - Density , [kg/m3 ]
C - Specific heat
( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]
Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing
Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others). Helpfull for specialists in material technology, structural engineer, mechanical engineer, metallurgy and metal traderTop
© 2003 - 2009 All rights reserved. About program.
The entire risk as to use of the Database of Steel and Alloy (Marochnik) content is assumed by you the user
Èíôîðìàöèÿ âçÿòà ñ ñàéòà Ìàðî÷íèê ñòàëè è ñïëàâîâ
© 2002 - 2009 Ìîññïåöñòàëü. Âñå ïðàâà çàùèùåíû