B16

B16 Structural Steel to ASTM A193/A193M

B16 - Specification & Application

  • ASTM A193/A193M - Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications
  • SAE J 775 - Engine poppet valve information report

B16 Engine poppet valve information report

Chemical composition(wt.%) of B16 grade: to ASTM A193/A193M

Elements Min.（≥） Max.（≤） Similar Remarks
C 0.36 0.44
Si 0.15 0.35
P - 0.04
S - 0.04
Mn 0.45 0.70
Cr 0.75 1.20
Mo 0.15 0.25
Cu - 0.25

Mechanical properties of grade B16 grade: to ASTM A193/A193M

Yield Strength,Rp 0.2(MPa)

Condition Min Max Similar Note
Minimum Tempering Temperature, °F 105 ksi 63.50mm and under
Minimum Tempering Temperature, °F 95 ksi over 63.50mm to 101.6mm
Minimum Tempering Temperature, °F 85 ksi over 4in to 8in

Tensile Strength,Rm(MPa)

Condition Min Max Similar Note
Minimum Tempering Temperature, °F 125 ksi 63.50mm and under
Minimum Tempering Temperature, °F 110 ksi over 63.50mm to 101.6mm
Minimum Tempering Temperature, °F 100 ksi over 4in to 8in

Impact,Kv/Ku(J)

Condition Min Max Similar Note

Elongation,A(%)

Condition Min Max Similar Note
Minimum Tempering Temperature, °F 18 63.50mm and under
Minimum Tempering Temperature, °F 18 over 63.50mm to 101.6mm
Minimum Tempering Temperature, °F 16 over 4in to 8in

Reduction of area,(%)

Condition Min Max Similar Note
Minimum Tempering Temperature, °F 50 63.50mm and under
Minimum Tempering Temperature, °F 50 over 63.50mm to 101.6mm
Minimum Tempering Temperature, °F 45 over 4in to 8in

Hardness

Condition Type Min Max Similar Note
Minimum Tempering Temperature, °F HBW 321 63.50mm and under
Minimum Tempering Temperature, °F HRC 35 63.50mm and under
Minimum Tempering Temperature, °F HBW 321 over 63.50mm to 101.6mm
Minimum Tempering Temperature, °F HRC 35 over 63.50mm to 101.6mm
Minimum Tempering Temperature, °F HBW over 4in to 8in
Minimum Tempering Temperature, °F HRC over 4in to 8in

B16 - Detail

B16 Engine poppet valve information report - Poppet valves control combustion chamber induction and exhaust gas flow in reciprocating combustion engines. Poppet valves are manufactured from iron, nickel, titanium, and cobalt-base metallic alloys that are often welded together in various combinations.


Martensitic and austenitic steels are used for intake valves. Specially designed high temperature martensitic alloys, austenitic alloys, and superalloys are used for exhaust valves.

Titanium alloys have been used for both intake and exhaust valves in some limited production, high performance applications. Special iron, nickel, and cobalt-base alloys are welded to many of the valve head alloys to improve seat face wear and corrosion resistance

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The majority of intake valves for all applications are one-piece construction that also has significant usage in spark ignition engine exhaust valves.


Equivalent Grade

1 X5CrNiCuNb16-4 2 X6CrNiWNb16-16 3 X8CrNiNb16-13 4 X8CrNiMoNb16-16 5 X7(8)CrNiMoBNb16-16 6 X8CrNiMoVNb16-13 7 X5CrNiCuNb16-4 8 X7CrNiMoBNb16-6 9 ISO X5CrNiCuNb16-4 10 SNB16-3 11 X5CrNiCuNb16-4 12 1.4542 13 X5CrNiCuNb16-4 14 1.4542 15 X7CrNiMoBNb16-6 16 1.4986 17 X8CrNiMoBNb16-16 18 X7CrNiMoBNb16-16 19 X5CrNiCuNb16-4 20 17-4PH, 1.4542, X5CrNiCuNb16-4

Equivalent Products

1 17-4ph(S17400,630) Stainless Steel Sheet 2 X5CrNiCuNb16-4 Plate 3 630 / 17-4ph ESR Steel for Equipment for making masks 4 X12CrNiWTiB16-13, 1.4962 Flat Bar

Product shapes we supply:

We can customize the production of B16 grade, contact us for the best solution.
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