1.5025 (51Si7)

Classification

Country	Section	Category
Country	Section	Category
Germany	Structural, Pressure Vessel and Engineering Steels	Mn-Si-Cu

Chemical composition

Standard	Fe, %	Si, %	Mn, %	P, %	C, %	S, %	N, %
Standard	Fe, %	Si, %	Mn, %	P, %	C, %	S, %	N, %
	96.753–97.53	1.5–1.8	0.5–0.8	< 0.045	0.47–0.55	< 0.045	< 0.007

Information on suppliers

Wish to advertise here?

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	$KU$ , $J$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	$KU$ , $J$	Treatment
					1350–1600	> 1150	< 6	< 25	> 14	Hardening 840-870 in water. Vacation 430-500 in the air

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
		soft, annealing	< 245

Description of chemical elements

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

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
$\epsilon_L$	%	Elongation at break (longitudinal)
$\psi$	%	Reduction in cross section on fracture
$KU$	$J$	Impact energy