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LB4

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England B.S. LB4 Specification for copper alloy ingots and copper alloy and high conductivity copper castings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: LB4 / LB4
Category Grade Standard Region/Area Standard Content
Metals LB4 BS 1400 England Specification for copper alloy ingots and copper alloy and high conductivity copper castings

Chemical composition(mass fraction)(wt.%) of the LB4

Element Min Max Similar
Zn - 2.0000 -
Sn 4.2000 6.0000 -
Si - 0.0200 -
Sb - 0.5000 -
S - 0.1000 -
Pb 8.5000 10.0000 -
P - 0.0500 -
Ni - 2.0000 -
Mn - 0.2000 -
Fe - 0.1500 -
Cu - - -
Al - 0.0100 -

Mechanical Properties of steel grade LB4

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)
357 (≥) 791 (≥) 41 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade LB4

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
12 - -     0.34 -  
925 637 - 24.3 331   -  
582 - 13 22.2   143 131

Heat Treatment of steel grade LB4

Heat treated : 1972°C - 1143°C

Technological Curves of steel grade LB4

Cross Reference Table (Equivalent Grade) of LB4

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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