1.8880 (P690QH)

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, %
	> 91.865	< 0.8	< 0.005	< 1.7	< 1.5	< 0.05	< 0.3	< 2.5	< 0.12	< 0.15	< 0.025	< 0.2	< 0.01	< 0.06	< 0.7	< 0.015

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\sigma_{0.2}$ , $MPa$	$\epsilon_L$ , %	$KV_{L}$ , $J$	$KV_{T}$ , $J$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\sigma_{0.2}$ , $MPa$	$\epsilon_L$ , %	$KV_{L}$ , $J$	$KV_{T}$ , $J$	Treatment
		< 100		moderate hardening	770–940			14–16		27
		100–150		moderate hardening	720–900	630
		< 50		moderate hardening		690
		50–100		moderate hardening		670
		< 20		moderate hardening			690
		20–40		moderate hardening			650
		40–50		moderate hardening			615
		50–65		moderate hardening			580
		65–80		moderate hardening			540
		80–100		moderate hardening			500
									40

Standards

Standard	Description
Standard	Description
EN 10028-6
EN 10216-3

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
$\sigma_{0.2}$	$MPa$	Tensile stress required to produce a total elongation of 0.2%
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\epsilon_L$	%	Elongation at break (longitudinal)
$KV_{L}$	$J$	Impact energy (longitudinal)
$KV_{T}$	$J$	Impact energy (transverse)