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ATI Allegheny Ludlum Stainless Steel Free Machining Grade Type 416, Tempered at 649°C (1200°F) (UNS S41600)

Category Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel
Manufacturer ATI Allegheny Ludlum
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF ATI Allegheny Ludlum Stainless Steel Free Machining Grade Type 416, Tempered at 649°C (1200°F) (UNS S41600).pdf
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Material Notes:
Allegheny Ludlum's 416 is a free-machining stainless steel specifically designed to exhibit improved machinability. These modifications retain, in so far as possible, the good mechanical properties and corrosion resistance of the basic or patent compositions which they represent. Sulfur is added to produce the free-machine characteristics. Type 416 is a martensitic 12 to 13% Cr free-machining stainless steel which can be hardened by heat treatment to higher strength and hardness levels. It has better machining properties than the austenitic grades, but lower corrosion resistance.Tensile strength and hardness below for samples oil quenched from 1800°F (982°C) then tempered at 649°C.Information provided by Allegheny Ludlum Corporation.
Physical Properties Metric English Comments
Density 7.64 g/cc
0.276 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell 235
235
Hardness, Rockwell C 21
21
Tensile Strength, Ultimate 738 MPa

@Temperature 23.0 °C
107000 psi

@Temperature 73.4 °F
Tensile Strength, Yield 565 MPa

@Strain 0.200 %
81900 psi

@Strain 0.200 %
Elongation at Break 20 %
20 %
in 2" (50 mm)
Reduction of Area 57 %
57 %
Modulus of Elasticity 200 GPa
29000 ksi
in tension
Fatigue Strength 370 MPa
53700 psi
test conditions not reported
Thermal Properties Metric English Comments
CTE, linear 10.1 µm/m-°C

@Temperature 20.0 - 100 °C
5.61 µin/in-°F

@Temperature 68.0 - 212 °F
11.5 µm/m-°C

@Temperature 20.0 - 500 °C
6.39 µin/in-°F

@Temperature 68.0 - 932 °F
12.4 µm/m-°C

@Temperature 20.0 - 787 °C
6.89 µin/in-°F

@Temperature 68.0 - 1450 °F
Thermal Conductivity 24.9 W/m-K
173 BTU-in/hr-ft²-°F
Melting Point 1490 °C
2710 °F
Maximum Service Temperature, Air 677 °C
1250 °F
oxidation resistance is good in continuous service
Component Elements Properties Metric English Comments
Carbon, C <= 0.15 %
<= 0.15 %
Chromium, Cr 12 - 14 %
12 - 14 %
Iron, Fe 86 %
86 %
as balance
Manganese, Mn <= 1.25 %
<= 1.25 %
Molybdenum, Mo <= 0.60 %
<= 0.60 %
Phosphorous, P <= 0.060 %
<= 0.060 %
Silicon, Si <= 1.0 %
<= 1.0 %
Sulfur, S >= 0.15 %
>= 0.15 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000570 ohm-cm
0.0000570 ohm-cm
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