σU
MPa
σY
MPa
ϵL(L0=80mm)
ϵL(L0=5.65So√)

1.0398 (DD12)

Classification

Country	Section	Category
Country	Section	Category
Germany	Non-alloy Steels	Steels with Average C < 0,12% or Rm < 400 MPa

Chemical composition

Standard	Fe, %	Mn, %	P, %	C, %	S, %
Standard	Fe, %	Mn, %	P, %	C, %	S, %
EN 10111	> 99.38	< 0.45	< 0.035	< 0.1	< 0.035

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_{L (L_0 = 80 mm)}$ , %	$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$ , %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_{L (L_0 = 80 mm)}$ , %	$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$ , %	Treatment
					420
		1–2				170–340
		2–11				170–320
		1–1.5					24
		1.5–2					25
		2–3					26
		3–11						30

Standards

Standard	Description
Standard	Description
EN 10111

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Mn	%	Manganese
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma_{Y}$	$MPa$	Yield strength
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\epsilon_{L (L_0 = 80 mm)}$	%	Elongation at break (longitudinal) (for L₀ = 80 mm)
$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$	%	Elongation at break (longitudinal) (for L₀ = 5.65√So)