ASTM A789 UNS S32205 Stainless Steel Tube

ASTM A789 UNS S32205 Stainless Steel Tube for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels used for prolonged periods at elevated temperatures.

Description

ASTM A789 UNS S32205 Stainless Steel Tube
Standard:ASTM A789 
Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASTM A789 UNS S32205 Stainless Steel Tube for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.
Manufacture
The tubes are made by the seamless or welded process with no filler metal added.
Heat Treatment
UNS
Designation A		 Temperature Quench
S32205 1870–2010°F[1020–1100°C] Rapid cooling in air or water
Chemical Composition
UNS
Designation A		 C Mn P S Si Ni Cr Mo N Cu Others
S32205 0.030 max 2.00 max 0.030 max 0.020 max 1.00 max 4.5-6.5 22.0-23.0 3.0-3.5 0.14-0.20 … …
Mechanical Properties
UNS
Designation A		 Tensile Strength, min, ksi [MPa] Yield Strength, min, ksi [MPa] Elongation in 2 in. or 50
mm, min, %		 Hardness, max
Brinell HRC
S32205 95 [655] 70 [485] 25 290 30
Mechanical Tests
Tension Tests
Flaring Test (for Seamless Tubes)
Flange Test (for Welded Tubes)
Hardness Test
Reverse Flattening Test – For welded tubes
Hydrostatic or Nondestructive Electric Test
Permissible Variations in Dimensions
Group Size, Outside Diameter,
in.[mm]		 Permissible Variations in Outside Diameter, in.[mm]
Permissible
Variations in Wall Thickness, A %
Permissible Variations in Cut
Length, in. B [mm]
 Thin Walled Tubes C
Over Under
1
Up to1 ⁄ 2 [12.7], excl
 ±0.005 [0.13] ±15
 1⁄ 8[3]
 0 ….
2
1 ⁄ 2 to 1 1 ⁄ 2 [12.7 to 38.1], excl
 ±0.005 [0.13] ±10  1⁄ 8[3] 0 less than 0.065 in. [1.6 mm] nominal
3 1 1 ⁄ 2 to 3 1 ⁄ 2 [38.1 to 88.9], excl ±0.010 [0.25] ±10  3⁄ 16[5] 0 Less than 0.095 in. [2.4 mm] nominal
4 3 1 ⁄ 2 to 5 1 ⁄ 2 [88.9 to 139.7], excl ±0.015 [0.38] ±10  3⁄ 16[5] 0 Less than 0.150 in. [3.8 mm] nominal
5 5 1 ⁄ 2 to 8 [139.7 to 203.2], incl ±0.030 [0.76] ±10  3⁄ 16[5] 0 Less than 0.150 in. [3.8 mm] nominal
Surface Condition
All tubes shall be free of excessive mill scale,suitable for inspection. A slight amount of oxidation will not be considered as scale.