EN 10028-6 Grade P690QH quenched and tempered (+QT)
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EN 10028-6 Grade P690QH quenched and tempered (+QT)

EN 10028-6 Grade P690QH quenched and tempered (+QT) introduction

High-temperature resistant weldable fine grain structural steel for pressure vessel application in the quenched and tempered condition.
Application temperature: -20 to 300 °C

Equivalent material: IS P690QH, DIN 1.8880, EN 1.8880

EN 10028-6 Grade P690QH quenched and tempered (+QT) general

Property Value Comment
Density Density of 7.8 g/cm³ Typical for Steel

EN 10028-6 Grade P690QH quenched and tempered (+QT) thermal

Property Value Comment
Coefficient of thermal expansion Coefficient of thermal expansion of 12.01 1/K Predicted Value
Specific heat capacity Specific heat capacity of 441.4 J/(kg·K) Predicted Value
Thermal conductivity Thermal conductivity of 34.55 W/(m·K) Predicted Value

EN 10028-6 Grade P690QH quenched and tempered (+QT) chemical

Property Value Condition Related Standards Shape
Boron Boron of 0.005 % quenched and tempered (+QT) EN 10028-6 Flat
Carbon Carbon of 0.2 % quenched and tempered (+QT) EN 10028-6 Flat
Chromium Chromium of 1.5 % quenched and tempered (+QT) EN 10028-6 Flat
Copper Copper of 0.3 % quenched and tempered (+QT) EN 10028-6 Flat
Manganese Manganese of 1.7 % quenched and tempered (+QT) EN 10028-6 Flat
Molybdenum Molybdenum of 0.7 % quenched and tempered (+QT) EN 10028-6 Flat
Nickel Nickel of 2.5 % quenched and tempered (+QT) EN 10028-6 Flat
Niobium Niobium of 0.06 % quenched and tempered (+QT) EN 10028-6 Flat
Nitrogen Nitrogen of 0.015 % quenched and tempered (+QT) EN 10028-6 Flat
Phosphorus Phosphorus of 0.025 % quenched and tempered (+QT) EN 10028-6 Flat
Silicon Silicon of 0.8 % quenched and tempered (+QT) EN 10028-6 Flat
Sulfur Sulfur of 0.01 % quenched and tempered (+QT) EN 10028-6 Flat
- Sulfur of 0.015 % quenched and tempered (+QT) EN 10028-6 Flat
Titanium Titanium of 0.05 % quenched and tempered (+QT) EN 10028-6 Flat
Vanadium Vanadium of 0.12 % quenched and tempered (+QT) EN 10028-6 Flat
Zirconium Zirconium of 0.15 % quenched and tempered (+QT) EN 10028-6 Flat

EN 10028-6 Grade P690QH quenched and tempered (+QT) electrical

Property Value Comment
Electrical conductivity Electrical conductivity of 5 S/m Predicted Value
Electrical resistivity Electrical resistivity of 35 Ω·m Predicted Value

EN 10028-6 Grade P690QH quenched and tempered (+QT) mechanical

Property Temperature Value Condition Related Standards Shape Comment
Elastic modulus - Elastic modulus of 190 - 210 GPa - - - Typical for Steel
Elongation - Elongation of 11.6 % - - - Predicted Value, A80
- - Elongation of 12.7 % - - - Predicted Value, A200
- - Elongation of 13.9 % - - - Predicted Value, Transverse
- - Elongation of 17.9 % - - - Predicted Value, A5
- - Elongation of 18.2 % - - - Predicted Value, A50
- - Elongation of 18.6 % - - - Predicted Value, A80 Transverse
- 20 °C Elongation of 14 % quenched and tempered (+QT) EN 10028-6 Flat -
Poisson's ratio - Poisson's ratio of 0.3 [-] - - - Typical for Steel
Reduction of area - Reduction of area of 40.3 % - - - Predicted Value
- - Reduction of area of 44.6 % - - - Predicted Value, Transverse
Shear modulus - Shear modulus of 79.6 GPa - - - Predicted Value
Shear strength - Shear strength of 598.9 MPa - - - Predicted Value
Tensile strength 20 °C Tensile strength of 720 - 940 MPa quenched and tempered (+QT) EN 10028-6 Flat -
- 20 °C Tensile strength of 720 - 900 MPa quenched and tempered (+QT) EN 10028-6 Flat -
- 20 °C Tensile strength of 770 - 940 MPa quenched and tempered (+QT) EN 10028-6 Flat -
- 20 °C Tensile strength of 770 - 900 MPa quenched and tempered (+QT) EN 10028-6 Flat -
Yield strength - Yield strength of 307 MPa - - - Predicted Value, RP1
- - Yield strength of 330.5 MPa - - - Predicted Value, RP1 Transverse
- - Yield strength of 489.3 MPa - - - Predicted Value, RP02 Transverse
- - Yield strength of 539.7 MPa - - - Predicted Value, RP05
- - Yield strength of 541.5 MPa - - - Predicted Value, Transverse
- - Yield strength of 724.4 MPa - - - Predicted Value, RP002
- 20 °C Yield strength of 630 MPa quenched and tempered (+QT) EN 10028-6 Flat -
- 20 °C Yield strength of 670 MPa quenched and tempered (+QT) EN 10028-6 Flat -
- 20 °C Yield strength of 690 MPa quenched and tempered (+QT) EN 10028-6 Flat -
- 50 °C Yield strength of 610 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 50 °C Yield strength of 650 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 50 °C Yield strength of 670 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 100 °C Yield strength of 585 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 100 °C Yield strength of 625 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 100 °C Yield strength of 645 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 150 °C Yield strength of 555 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 150 °C Yield strength of 595 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 150 °C Yield strength of 615 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 200 °C Yield strength of 535 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 200 °C Yield strength of 575 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 200 °C Yield strength of 595 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 250 °C Yield strength of 515 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 250 °C Yield strength of 555 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 250 °C Yield strength of 575 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 300 °C Yield strength of 510 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 300 °C Yield strength of 550 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02
- 300 °C Yield strength of 570 MPa quenched and tempered (+QT) EN 10028-6 Flat RP02

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