Alloy 316H Stainless Steel

Alloy 316H Stainless Steel

Alloy 316H Stainless Steel Chemical Analysis Weight % (all values are maximum unless a range is otherwise indicated) Physical Properties Density 0.285 lbs/in3 8.00 g/cm3 Electrical Resistivity 74 Microhm-cm at 20°C 29.1 Microhm-in at 68°F Melting Range 2507 – 2552°F 1375 – 1400°C Thermal...
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Product Details

Alloy 316H Stainless Steel

Chemical Analysis

Weight % (all values are maximum unless a range is otherwise indicated)

Element316H316316L
Chromium16.0 min.-18.0 max.16.0 min.-18.0 max.16.0 min.-18.0 max.
Nickel10.0 min.-14.0 max.10.0 min.-14.0 max.10.0 min.-14.0 max.
Molybdenum2.00 min.-3.00 max.2.00 min.-3.00 max.2.00 min.-3.00 max.
Carbon0.04 – 0.100.080.030
Manganese2.002.002.00
Phosphorus0.0450.0450.045
Sulfur0.0300.0300.030
Silicon0.750.750.75
Nitrogen0.100.10
IronBalanceBalanceBalance


Physical Properties

Density

0.285 lbs/in3
8.00 g/cm3


Electrical Resistivity

74 Microhm-cm at 20°C
29.1 Microhm-in at 68°F


Melting Range

2507 – 2552°F
1375 – 1400°C


Thermal Conductivity 212°F (100°C)

8.7 BTU/hr/ft2/ft/°F

15 W/m-°K


Mean Coefficient of Thermal Expansion

Temperature Range


°F°Cin/in °Fcm/cm °C
68-21220-1008.9 x 10-616.0 x 10-6


Mechanical Properties

Values at 68oF (20oC) (minimum values, unless specified)

Yield Strength
.2% Offset
Ultimate Tensile
Strength
Elongation
in 2 in.
Hardness

psi (min.)(MPa)psi (min.)(MPa)%
30,00020575,0005154095 Rockwell B

316H also has a requirement for a grain size of ASTM No. 7 or coarser.


Corrosion Resistance

In most instances the corrosion resistance of Alloy 316H will be comparable to Alloy 316/316 L and will have superior corrosion resistance to Alloy 304/304L. Process environments that do not attack Alloy 304/304L will not attack this grade. One exception, however, is in highly oxidizing acids such as nitric acid where stainless steels containing molybdenum are less resistant. Alloy 316H performs well in sulfur containing service such as that encountered in the pulp and paper industry. The alloy can be used in high concentrations at temperatures up to 120°F (38°C).


Alloy 316H also has good resistance to pitting in phosphoric and acetic acids. It performs well in boiling 20% phosphoric acid. The alloy can also be used in food and pharmaceutical process industries where it is utilized to handle hot organic and fatty acids where product contamination is a concern.


Alloy 316H performs well in fresh water service even with high levels of chlorides. The alloy has excellent resistance to corrosion in marine environments under atmospheric conditions.


The higher molybdenum content of Alloy 316H assures it will have superior pitting resistance to Alloy 304/304L in applications involving chloride solutions particularly in oxidizing environments.


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