EN 1.8201 (7CrWVMoNb9-6) Chromium-Tungsten Steel
Other Steels
Property Overview
Density8g/cm³
Elastic Modulus190GPa
Tensile Strength630MPa
Yield Strength400MPa
Brinell Hardness190HB
Maximum Service Temperature450°C
Chemical Composition
C
0.040 to 0.1%
CR
1.9 to 2.6%
MO
0.050 to 0.3%
MN
0.1 to 0.6%
SI
0 to 0.5%
N
0 to 0.015%
P
0 to 0.030%
S
0 to 0.010%
NB
0.020 to 0.080%
TI
0.0050 to 0.060%
V
0.2 to 0.3%
AL
0 to 0.030%
W
1.5 to 1.8%
B
0.0010 to 0.0060%
FE
93.6 to 96.2%
Mechanical
A - Min. elongation at fracture (%) longitud., (+NT)
20
+NT
A - Min. elongation at fracture (%) transverse, (+NT)
18
+NT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
20 %
Fatigue Strength
310 MPa
Impact Strength: V-Notched Charpy
38 J
KV - Impact energy (J) longitud., (+NT)
+20° 40
+NT
KV - Impact energy (J) transverse, (+NT)
+20° 27
+NT
Poisson's Ratio
0.29
R p0.2 0.2% proof strength (MPa) (+NT)
400
+NT
Rm - Tensile strength (MPa) (+NT)
510-740
+NT
Shear Modulus
74 GPa
Shear Strength
390 MPa
Tensile Strength: Ultimate (UTS)
630 MPa
Tensile Strength: Yield (Proof)
450 MPa
Hardness
+A Soft annealed +AC Annealed to achieve spheroidization of the carbides +AR As rolled +AT Solution annealed +C Cold drawn / hard +CR Cold rolled +FP Treated to ferrite-pearlite structure and hardness range +I Isothermal annealing +LC Cold drawn / soft +M Thermo mechanical rolling +N Normalized +NT Normalized and tempered
+P Precipitation hardened +PE Peeled +QA Air quenched and tempered +QL Liquid quenched and tempered +QT Quenched and tempered +S Treated to improve shearability +SH As rolled and turned +SR Cold drawn and stress relieved +T Tempered +TH Treated to hardness range +WW Warm worked +U Untreated
+A
Brinell Hardness
190
Physical
Density
8.0 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
450 °C
Melting Completion (Liquidus)
1500 °C
Melting Onset (Solidus)
1450 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
40 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
18 points
Electrical
Electrical Conductivity: Equal Volume
7.8 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.8 % IACS
Calculated
PREN (Pitting Resistance)
5.7
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m 3
Resilience: Unit (Modulus of Resilience)
530 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
22 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
7.0 % relative
Embodied Carbon
2.5 kg CO 2 /kg material
Embodied Energy
36 MJ/kg
Embodied Energy
36 MJ/kg 16 x 10 3 BTU/lb
Embodied Water
59 L/kg
Embodied Water
59 L/kg 7.0 gal/lb
Registered Designations & Aliases
1.82011.82017CrWVMoNb9-67CrWVMoNb9-6EN 1.8201 (7CrWVMoNb9-6) Chromium-Tungsten Steel
Standards
EN 10216-2 EN 10216-2: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10216-2 EN 10216-2: Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties