Grade 7

BS 3111-1:1987 - Steel for cold forged fasteners and similar components-Part 1: Specification for carbon and low alloy steel wire

This page provides Grade 7 datasheet, Grade 7 mechanical properties, chemical element Grade 7, technical specifications of Grade 7 steel material properties. Grade 7 performance specifications.

Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy Grade 7 B.S. UK Steel for cold forged fasteners and similar components
0/4
1/1
1/2
1/3
2/1
2/2
3/1
3/2
5/1
5/2
Datasheet for:Steel Grades:Special Alloy:Grade 7

Chemical composition(mass fraction)(wt.%) of the Grade 7

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
0.38-0.43 0.15-0.40 0.75-1.00 0.035 0.035 0.40-0.60 0.40-0.70 0.20-0.30

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade Grade 7

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)
314 (≥) 449 (≥) 32 22 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 332
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
41 - -     0.21 -  
465 586 - 32.3 112   -  
373 - 43 23.2   444 242
Heat treated : 1595°C - 1244°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
X63CrMoV5-1 DIN Germany
Cold working alloy tool steel
X100CrMoV5-1 DIN Germany
Cold working alloy tool steel
X35CrMoV5-1-1 DIN Germany
Hot working alloy tool steel
X38CrMoV5-1 DIN Germany
Hot working alloy tool steel
X40CrMoV5-1 DIN Germany
Hot working alloy tool steel
X50CrMoV5-1 DIN Germany
Hot working alloy tool steel
30WCrV15-1 DIN Germany
Hot working alloy tool steel
X37CrMoW5-1 DIN Germany
Hot working alloy tool steel
X37CrMoV5-1 ISO
Carbide for cutting tools
X37CrMoV5-1 ISO
Carbide for cutting tools
X2CrNiMnMoNbN25-18-5-4 DIN Germany
Stainless steel
X6NiCrTiMoVB25-15-2/X5NiCrTi26-15 DIN Germany
The high-temperature and high-strength steel
X4CrNiMo16-5-1 AFNOR France
Martensite And Precipitation Hardening
Z5CTDV25-15B AFNOR France
Stainless Steel Plate & Steel Strip
Z6NCTDV25-15B AFNOR France
Hot-Rolled stainless steel bar and wire rod (NF A 35-574 (1990))
Z8NCTDV25-15BFF AFNOR France
Cold drawn stainless steel bar and wire rod(NF A 35-577(1990))
X6NiCrTiMoB25-15-2 AFNOR France
Fasteners with stainless steel and nickel alloy for high temperature and low temperature (NF-EN 10269(1999))
X10CrNiMoMnNbVB15-10-1 AFNOR France
Fasteners with stainless steel and nickel alloy for high temperature and low temperature (NF-EN 10269(1999))
X15CrMo5-1 AFNOR France
Fasteners with stainless steel and nickel alloy for high temperature and low temperature (NF-EN 10269(1999))
M-35-1 AISI USA
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