1.8868 (P355QL1)

Classification

Country	Section	Category
Country	Section	Category
Germany	Structural, Pressure Vessel and Engineering Steels	High Strength Weldable Steels not Intended for Heat Treatment by User

Chemical composition

Standard	Fe, %	Si, %	B, %	Mn, %	Cr, %	Ti, %	Cu, %	Ni, %	V, %	Zr, %	P, %	C, %	S, %	Nb, %	Mo, %	N, %
Standard	Fe, %	Si, %	B, %	Mn, %	Cr, %	Ti, %	Cu, %	Ni, %	V, %	Zr, %	P, %	C, %	S, %	Nb, %	Mo, %	N, %
EN 10028-6	> 96.352	< 0.4	< 0.005	< 1.5	< 0.3	< 0.03	< 0.3	< 0.5	< 0.06	< 0.05	< 0.02	< 0.16	< 0.008	< 0.05	< 0.25	< 0.015

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_L$ , %	$KV_{T}$ , $J$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_L$ , %	$KV_{T}$ , $J$	Treatment
		< 100		moderate hardening	490–630		22	27
		100–150		moderate hardening	450–590	315
		< 50		moderate hardening		355
		50–100		moderate hardening		335

Standards

Standard	Description
Standard	Description
EN 10028-6

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Mn	%	Manganese
Cr	%	Chrome
Ti	%	Titan
Cu	%	Copper
Ni	%	Nickel
V	%	Vanadium
Zr	%	Zirconium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Nb	%	Niobium
Mo	%	Molybdenum
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)
$KV_{T}$	$J$	Impact energy (transverse)