7124 QualitySheet Specification

7124 Quality Sheet Specification

Filter steel for automotive industry

Reproducible Letter Symbols --> CCR --> CCRD --> CCRF --> CCRFS --> CCR

Alternatives6112 6113 6114 7111 7114 7115 7118 7314 7315 7512 7513 7514 7612

Flat / Cold Rolled

Cold rolled coils or flat steel products are produced by rolling hot rolled flat steels without a heat treatment operation in a thickness range of 0.20 to 2.00mm. While the product’s physical properties are all homogeneous along the strip, surface flatness, width and thickness values have fulfilled expectations at the top level.

Filter steel for automotive industry

Chemical Composition (%)

Standard Equivalent		Erdemir Grade No	Cmax.	Mnmax.	Pmax.	Smax.
Standard	Quality	Erdemir Grade No	Cmax.	Mnmax.	Pmax.	Smax.
EN 10130:2006	DC04	7124	0.08	0.40	0.03	0.03

Deoxidation method of this products is fully-killed. Minimum aluminium to nitrogen ratio is 2:1.

Mechanical Properties

Standard Equivalent		Erdemir Grade No	Re [N/mm2] t(thickness, mm)			Rm [N/mm2]	A(%) min. t(thickness, mm)			n90	r90
Standard	Quality		Re [N/mm2] t(thickness, mm)				A(%) min. t(thickness, mm)			n90
Standard	Quality		0.35≤t≤0.5	0.51≤t≤0.7	0.71≤t≤2		A800.35≤t≤0.5	A800.51≤t≤0.7	A800.71≤t≤2	min.
EN 10130:2006	DC04	7124	250 max.	230 max.	210 max.	270-350	34	36	38	0.18	1.6 min.

Tensile test values apply to "transverse" test pieces
The value of r90 only apply to products of thickness d ≥ 0.5 mm.
The value of n90 only apply to products of thickness d ≥ 0.5 mm.
For design purposes, the lower limit of Re may be assumed to be 140 N/mm² (14.3 kg/mm²)
Guarantee periods of absence of stretcher strains marks and mechanical properties are 6 months. The period begin on the date on which products are made available.