1.8888 (P690QL2)

Classification

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, %
> 91.875 < 0.8 < 0.005 < 1.7 < 1.5 < 0.05 < 0.3 < 2.5 < 0.12 < 0.15 < 0.02 < 0.2 < 0.005 < 0.06 < 0.7 < 0.015

Information on suppliers

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
< 100 moderate hardening 770–940 14–16 40 27
100–150 moderate hardening 720–900 630
< 50 moderate hardening 690
50–100 moderate hardening 670
< 40 moderate hardening 690
40–50 moderate hardening 650
50–65 moderate hardening 615
65–80 moderate hardening 580
80–100 moderate hardening 540

Standards

Standard Description
EN 10028-6
EN 10216-3

Description of chemical elements

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
$$\sigma_{Y}$$ $$MPa$$ 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)