Database of Steel and Alloy (Marochnik)

HOME

STANDARDS

METALS

SEARCH

BULLETIN BOARD

GRADING

EDUCATION IN UKRAINE

CONTACTS

(495)
(495)

Metals -> Structural steel -> High workability structural steel

Characteristics of the material А12 ( А12, А12 ).

Material :	А12 ( А12, А12 )
Substitute:	А20
Classification :	High workability structural steel

Chemical composition in % of the material А12 ( А12, А12 ) .

C	Si	Mn	S	P
0.08 - 0.16	0.15 - 0.35	0.7 - 1.1	0.08 - 0.2	0.08 - 0.15

Temperature of critical points of the grade А12 ( А12, А12 ).

Ac₁ = 735 , Ac₃(Ac_m) = 866 , Ar₃(Arc_m) = 840 , Ar₁ = 685

Mechanical properties under Т=20^oС of the material А12 ( А12, А12 ) .

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Steel hotrolled	100		410		22	34		As-delivered state

Brinell hardness of the material А12 ( А12, А12 ) (hot-rolled) ,	HB 10^-1= 160 MPa
Brinell hardness of the material А12 ( А12, А12 ) (cold-drawn, cold-worked) ,	HB 10^-1= 217 MPa

Physical properties of the material А12 ( А12, А12 ) .

T	E 10^{- 5}	a 10⁶	l	r	C	R 10⁹
Grade	MPa	1/Grade	Watt/(m·Grade)	kg/m³	J/(kg·Grade)	Ohm·m
20	1.98			7830
100	1.83	11.9	78		470
200		12.5	67
300	1.66				479
400		13.6			517
500		14.2
600					571
T	E 10^{- 5}	a 10⁶	l	r	C	R 10⁹

Technological properties of the material А12 ( А12, А12 ) .

Weldability:	is not used.
Flakes :	predisposed
Temper brittleness:	not predisposed

Specification :

Mechanical properties :
s_в	- Tensile strength , [MPa]
s_T	- Yield stress, [MPa]
d₅	- 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 20^o - T ) , [1/Grade]
l	- Termal (heat) condition coefficient , [Watt/(m·Grade)]
r	- Density , [kg/m³]
C	- Specific heat ( range 20^o - 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 trader

Top

Информация взята с сайта Марочник стали и сплавов

Главная | Новости | Марочник сталей | Контакты | Обратная связь

-12345-