Metals -> Structural steel -> High quality structural carbon steel Characteristics of the material 30 ( 30, 30 ).
Material : 30 ( 30, 30 ) Substitute: 25, 35 Classification : High quality structural carbon steel
Chemical composition in % of the material 30 ( 30, 30 ) . C Si Mn Ni S P Cr Cu As 0.27 - 0.35 0.17 - 0.37 0.5 - 0.8 max 0.25 max 0.04 max 0.035 max 0.25 max 0.25 max 0.08
Temperature of critical points of the grade 30 ( 30, 30 ).
Ac1 = 730 , Ac3 (Acm ) = 820 , Ar3 (Arcm ) = 796 , Ar1 = 680 , Mn = 380
Mechanical properties under Т=20o С of the material 30 ( 30, 30 ) .
Assortment
Dimension
Direct.
s в
s T
d 5
y
KCU
Heat treatment - mm - MPa MPa % % kJ / m2 - Steel 530 320 25 52 620 As-delivered state
Brinell hardness of the material 30 ( 30, 30 ) (annealing) , HB 10 -1 = 179 MPa Brinell hardness of the material 30 ( 30, 30 ) (cold-drawn, cold-worked) , HB 10 -1 = 207 MPa Brinell hardness of the material 30 ( 30, 30 ) (hot-rolled, annealing) , HB 10 -1 = 156 MPa
Physical properties of the material 30 ( 30, 30 ) . 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 52 7850 100 1.96 12.1 51 470 200 1.91 12.9 49 483 300 1.85 13.6 46 546 400 14.2 43 563 500 14.7 39 764 600 1.64 15 36 700 15.2 32 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 30 ( 30, 30 ) . Weldability: limited weldability. Flakes : not predisposed Temper brittleness: not predisposed
Specification :
Mechanical properties :
s в - 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
Информация взята с сайта Марочник стали и сплавов
© 2002 - 2009 Мосспецсталь. Все права защищены