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ERTi-21

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America ASME ERTi-21 Specification for titanium and titanium-alloy welding electrodes and rods and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ERTi-21 / ERTi-21
Category Grade Standard Region/Area Standard Content
Metals ERTi-21 ASME SFA-5.16/SFA-5.16M America Specification for titanium and titanium-alloy welding electrodes and rods

Chemical composition(mass fraction)(wt.%) of the ERTi-21

Element Min Max Similar
C - 0.0300 -
Si 0.1500 0.2500 -
Mo 14.0000 16.0000 -
Ti - - -
N - 0.0120 -
Al 2.5000 3.5000 -
Nb 2.2000 3.2000 -
Fe 0.2000 0.4000 -
H - 0.0050 -
O 0.1000 0.1500 -
Y - 0.0050 -
Others each - 0.0500 -
Others total - 0.2000 -

Mechanical Properties of steel grade ERTi-21

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
958 (≥) 311 (≥) 21 42 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade ERTi-21

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
11 - -     0.21 -  
697 285 - 14.3 323   -  
241 - 34 12.2   213 432

Heat Treatment of steel grade ERTi-21

Heat treated : 1894°C - 1371°C

Technological Curves of steel grade ERTi-21

Cross Reference Table (Equivalent Grade) of ERTi-21

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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