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HR4

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HR3 HR5
#HR4

Description

UK B.S. BS 1449-1-1.2, HR4 Specialsteel Steel plate, sheet and strip. Carbon and carbon-manganese plate, sheet and strip. Specification for hot rolled steel plate, sheet and wide strip based on formability and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: HR4
Category Class Grade Standard Country Application
Steel GradesSpecialsteel HR4 B.S. UK Steel plate, sheet and strip. Carbon and carbon-manganese plate, sheet and strip. Specification for hot rolled steel plate, sheet and wide strip based on formability

Chemical composition(mass fraction)(wt.%) of the HR4

C Si Mn P S Cr Ni Mo Co Ti Fe Al Cu B Bi Pb Ag Zr
0.12 -0.20 ≤1.00 ≤1.00 ≤ ≥ ≤0.015 14.00 -16.00 ≤remaining 3.00 -5.00 13.00 -15.50 3.50 -4.50 ≤1.00 4.50 -5.50 ≤0.20 0.0100 -0.0250 ≤0.0001 ≤0.0015 ≤0.0005 ≤0.15

Mechanical Properties of steel grade HR4

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)
799 (≥) 383 (≥) 12 12 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade HR4

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
21 - -     0.21 -  
358 628 - 32.3 322   -  
343 - 22 12.2   211 142

Heat Treatment of steel grade HR4

Heat treated : 1231°C - 1565°C

Technological Curves of steel grade HR4

Relevant standard of HR4

BS 1449-1-1.2 Steel plate, sheet and strip. Carbon and carbon-manganese plate, sheet and strip. Specification for hot rolled steel plate, sheet and wide strip based on formability BS-1449-1-1-2.pdf
HR3 HR5
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com
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