Iron Chromium Aluminium Alloys/strip

Model NO.: CrAl 14/4 Material: FeSi PCD: 100mm Hole: 5 Certification: ISO Technique: Cold Rolled Edge: Slit edge Trademark: TANKII Specification: ASTM, JIS, GB, DIN HS Code: 72209000 Product Type: Wire Carbon Content: Low Carbon ET: 15mm Steel Grade: Cral 14/4 Surface Treatment: Polished Application: Resistor Stock: Not Stock Transport Package: waterproof film, weave bag, wooden case Origin: China Alchrome Alloy Strip(CrAl 14-4)/China Producer

Nominal Analysis

14.00 Cr, 4.00 Al, Bal. Fe

Max contineous working temperature: 950º C.

Melting Temperature: 1450º C

Electrical Resistivity: 1.25 ohm mm2/m

Has been used extensively as heating elements in industrial furnaces and electrical kilns.

Has less hot strength than Tophet Alloys but much higher melting point.

Shanghai TANKII ALLOY MATERIAL CO., LTD.

ALCHROME ALLOY PRODUCER IN CHINA

Chemical Composition and Main Property of Fe-Cr-Al Resistance Alloy
Properties \ Grade		1Cr13Al4	0Cr25Al5	0Cr21Al6	0Cr23Al5	0Cr21Al4	0Cr21Al6Nb	0Cr27Al7Mo2
Main Chemical Composition (%)	Cr	12.0-15.0	23.0-26.0	19.0-22.0	22.5-24.5	18.0-21.0	21.0-23.0	26.5-27.8
	Al	4.0-6.0	4.5-6.5	5.0-7.0	4.2-5.0	3.0-4.2	5.0-7.0	6.0-7.0
	Re	opportune	opportune	opportune	opportune	opportune	opportune	opportune
	Fe	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.
							Nb0.5	Mo1.8-2.2
Max Continuous Service Temperature(oC)		950	1250	1250	1250	1100	1350	1400
Resisivity 20oC (Ωmm2/m)		1.25 ±0.08	1.42 ±0.06	1.42 ±0.07	1.35 ±0.07	1.23 ±0.07	1.45 ±0.07	1.53 ±0.07
Density(g/cm3)		7.4	7.1	7.16	7.25	7.35	7.1	7.1
Thermal Conductivity		52.7	46.1	63.2	60.2	46.9	46.1	45.2
(KJ/m@h@oC)
Coefficient of Thermal Expansion(α×10-6/oC)		15.4	16	14.7	15	13.5	16	16
Approximate Melting Point( oC)		1450	1500	1500	1500	1500	1510	1520
Tensile Strength(N/mm2)		580-680	630-780	630-780	630-780	600-700	650-800	680-830
Elongation(%)		>16	>12	>12	>12	>12	>12	>10
Section Variation		65-75	60-75	65-75	65-75	65-75	65-75	65-75
Shrink Rate (%)
Repeatedly Bend Frequency(F/R)		>5	>5	>5	>5	>5	>5	>5
Hardness (H.B.)		200-260	200-260	200-260	200-260	200-260	200-260	200-260
Continuous Service Time		no	≥80/1300	≥80/1300	≥80/1300	≥80/1250	≥50/1350	≥50/1350
Micrographic Structure		Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Magnetic Property		Magnetic	Magnetic	Magnetic	Magnetic	Magnetic	Magnetic	Magnetic

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