A 688 Grade TP 316LN (United States / ASTM) Material Properties

Material group: Ferrous Alloys / Stainless steels
Country/Standard: United States / ASTM

Data updates

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Update History:
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Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 205 MPa view details
Tensile Strength 515 MPa view details
Elongation, A 35 % view details
Rockwell Hardness (HR) val1
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Yield Strength, Rp0.2 29.7 ksi view details
Tensile Strength 74.7 ksi view details
Elongation, A 35 % view details
Rockwell Hardness (HR) val1
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view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 215 GPa view details
Density 7.61 — 8.1 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 27.6 E+03 — 31.2 E+03 ksi view details
Density 0.275 — 0.293 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.035
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
16.00 – 18.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 2.00
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

A688/A688M: 2024 / Standard Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes

Heat Treatments

  • Annealing procedure shall consist of heating the material to a minimum temperature of 1040 °C (1900 °F) followed by a rapid cooling to below 370 °C (700 °F). The cooling rate shall be sufficiently rapid to prevent harmful carbide precipitation.