X10CrAl13, 1.4724, X10CrAlSi13 - heat resistant steel

Ferritic heat-resistant steel X10CrAlSi13, X10CrAl13, 1.4724 resistant up to 850℃ according to EN 10095, SEW 470.

Standard	Steel Grade
	Chemical Composition %
	C:	Mn:	Si:	P:	S:	Cr:	Ni:	Al:
PN	H13JS
PN	<0.12	<0.8	1.0 - 1.3	<0.04	<0.03	12.0 - 14.0	<0.5	0.8 - 1.1
EN	X10CrAlSi13 - X10CrSiAl13 - X 10 CrAlSi 13 - 1.4724
EN	<0.12	<1.0	0.7 - 1.4	<0.04	<0.015	12.0 - 14.0	-	0.7 - 1.2
SEW	X10CrAl13 - X 10 CrAl 13
SEW	<0.12	<1.0	0.7 - 1.4	<0.04	<0.015	12.0 - 14.0	-	0.7 - 1.2
UNI	X10CrAl12 - X 10 CrAl 12
UNI	<0.12	<0.6	1.5 - 2.0	<0.04	<0.03	11.0 - 13.0	-	1.1 - 1.3
AF	Z13C13 - Z 13 C 13
AF	0.10 - 0.15	<1.0	<0.75	<0.04	<0.015	12.0 - 13.5	-	-
GOST	10Х13СЮ
GOST	0.07 - 0.12	<0.8	1.2 - 2.0	<0.03	<0.025	12.0 - 14.0	-	1.0 - 1.8

X10CrAl13, 1.4724 - Description and specification

Heat-resistant ferritic steel with 13% chromium content with the addition of Aluminum and resistance to 950C in air work. Material shows satisfactory resistance to reducing gases containing sulfur compounds below 850C. It is an economical alternative to heat-resistant nickel-austenitic stainless steels, especially in terms of machining and components working at low loads. It is characterized by low resistance while working in nitriding, carbonitriding atmospheres, and carburizing environments. The maceration of the temperature threshold >950C results in the grain growth of the structure, which even causes the irreversible brittleness of the material even after the details are cooled. The ferritic structure of X10CrAl13 species significantly limits the plasticity, impact resistance and strength properties of the product. Due to the difficulties associated with cold forming, molding should be performed at elevated temperatures of 100-350C with cross-sections up to 6mm. Higher distortions and thicknesses should be formed in the 700-850C temp. range. Steel has a lower grain size than in the case of species with 17-18% chromium addition.

The most commonly used arc welding method requires tacking the edges, leaving a larger slit than in the case of carbon steels. Materials with a thickness bigger than 3mm should be welded on both sides with overlapping layers alternating in opposite directions. Welding requires slow heating to 100-200C with a soft flame gas burner. 13%Cr and 25%Cr+18%Ni electrodes are used for welding. After welding, the product requires annealing. Steel shows high brittleness after long-term operation at high temperatures.

Species used for the production of furnace parts, reactors, apparatus in the synthetic fibers industry, vacuum chambers, supports for heaters, burners, parts of plasticists, reactors, parts of steam boilers, rails, hubcaps, pipes for industrial furnaces, parts of burners and soot blowers.

Mechanical properties of X10CrAlSi13, X10CrAl13, 1.4724 in +A condition

Tensile strength, R_m: 450 - 650 MPa
The yield point, R_e: > 250 MPa
Elongation, A:> 13%
Hardness: <192 HB
Modulus of elasticity, E = 206 GPa
Heat capacity, c_p = 500 J * kg^-1 * K^-1
Thermal conductivity, λ = 21 W * m^-1 * K^-1
Specific resistance, Ω: 0.75 mkOhm * m
Linear expansion coefficient, α: 10.5 - 12.5 * 10^-6 K^-1

Heat-resistance and mechanical properties at elevated temperatures H13JS, X10CrAl13, X10CrAlSi13, 1.4724

Properties (MPa)	Temperature (℃)
Properties (MPa)	600	700	800	900
Creep strength, R_z/10000	29	8	3	1.5
Creep strength, R_z/100000	13.2	3.7	1.3	0.6
Creep limit, R_1/1000	34	10	4	1.5

Heat and plastic treatment of X10CrAl13, X10CrAlSi13, 1.4724

Rolling and forging at a temperature of 1100 - 800 ℃
Annealing +A at 800 - 860℃ with cooling in water or air

In the above-mentioned grades we deliver:

Other indications and equivalents:

H13JS, X10CrAlSi13, X 10 CrAlSi 13, X10CrAl13, X 10 CrAl 13, X10CrAl12, X 10 CrAl 12, 1.4724, Z13C13, Z 13 C 13, 1Cr19Al3, X10CrSiAl13, X 10 CrSiAl 13, CSN 17125, 10Х13СЮ, 10Ch13SJu, 10H13SJu, 10Kh13SJu.