EN 1.8893 (E730K2) Steel
Other Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength790MPa
Yield Strength730MPa
Brinell Hardness250HB
Maximum Service Temperature410°C
Chemical Composition
C
0 to 0.2%
CR
0 to 0.3%
NI
0.3 to 0.7%
MO
0.3 to 0.45%
MN
1.4 to 1.7%
SI
0 to 0.5%
N
0 to 0.020%
P
0 to 0.025%
S
0 to 0.025%
CU
0 to 0.2%
NB
0 to 0.050%
TI
0 to 0.050%
V
0 to 0.12%
AL
0.020 to 0.060%
FE
95.6 to 98%
Mechanical
A - Min. elongation at fracture (%) longitud., (+QT)
15
+QT
A - Min. elongation at fracture (%) transverse, (+QT)
13
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
16 %
Fatigue Strength
470 MPa
Impact Strength: V-Notched Charpy
38 J
KV - Impact energy (J) longitud., (+QT)
-20° 40
+QT
KV - Impact energy (J) transverse, (+QT)
-20° 27
+QT
Poisson's Ratio
0.29
ReH - Minimum yield strength (MPa) (+QT)
730
+QT
ReH - Minimum yield strength (MPa) (+QT)
670
+QT
ReH - Minimum yield strength (MPa) (+QT)
620
+QT
ReH - Minimum yield strength (MPa) (+QT)
580
+QT
ReH - Minimum yield strength (MPa) (+QT)
540
+QT
Rm - Tensile strength (MPa) (+QT)
790
+QT
Rm - Tensile strength (MPa) (+QT)
750
+QT
Rm - Tensile strength (MPa) (+QT)
700
+QT
Rm - Tensile strength (MPa) (+QT)
680
+QT
Shear Modulus
73 GPa
Shear Strength
510 MPa
Tensile Strength: Ultimate (UTS)
830 MPa
Tensile Strength: Yield (Proof)
720 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
250
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
410 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °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
24 points
Electrical
Electrical Conductivity: Equal Volume
7.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.5 % IACS
Other
Nominal thickness (mm):
to 16
Nominal thickness (mm):
16 - 40
Nominal thickness (mm):
40 - 65
Nominal thickness (mm):
65 - 100
Nominal thickness (mm):
65 - 80
Nominal thickness (mm):
80 - 100
Calculated
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
1370 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
29 points
Strength to Weight: Bending
25 points
Environmental
Base Metal Price
2.9 % relative
Embodied Carbon
1.7 kg CO 2 /kg material
Embodied Energy
23 MJ/kg
Embodied Energy
23 MJ/kg 10 x 10 3 BTU/lb
Embodied Water
51 L/kg
Embodied Water
51 L/kg 6.1 gal/lb
Registered Designations & Aliases
1.88931.8893E730K2E730K2EN 1.8893 (E730K2) Steel
Standards
EN 10297-1 EN 10297-1: 2003 Seamless circular steel tubes for mechanical and general engineering purposes. Non-alloy and alloy steel tubes. Technical delivery conditions
EN 10297-1 EN 10297-1: Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 1: Non-alloy and alloy steel tubes
EN 10297-1 EN 10297-1: Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 1: Non-alloy and alloy steel tubes Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005