ASTM A268 TP405 Ferritic Steel U Bend
Nov 05, 2025
Martensitic stainless steel tube as per ASTM A268 TP405 (S40500) is a standard specification for seamless and welded ferritic and martensitic stainless steel tubes for general corrosion-resisting and high-temperature service. This specification covers tubes in sizes ranging from 1/8 inch to 3 inches in outside diameter and from 0.015 inch to 0.320 inch in wall thickness.
TP 405 is a low carbon, 12% chrome steel, not subject to appreciable hardening through air cooling from high temperatures. This tendency retards the formation of hardening cracks caused by welding. Practically the same corrosion and oxidation resistance as TP410. Can be machined, drawn, spun and formed without difficulty. Used for applications where hardening upon cooling from high temperatures must be avoided. Has excellent long-time stability up to 1200°F.
Martensitic stainless steels are a type of stainless steel that contains high levels of chromium and carbon, and lower levels of nickel. They are known for their hardness, strength, and wear resistance, and are often used in applications that require these properties, such as cutlery, knives, and surgical instruments.
Specification
U Bend Ferritic Steel Tube ASTM A268 TP405 Chemical composition mass in %
|
Material grade |
Norm |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
Ti |
others |
|
max. |
max. |
max. |
max. |
max. |
|||||||
|
1.4002 |
EN 10297-2 |
0,080 |
1,00 |
1,00 |
0,040 |
0,030 |
12,00 - 14,00 |
Al 0,1 – 0,3 |
|||
|
TP405 |
ASME SA / ASTM A 268 |
0,080 |
1,00 |
1,00 |
0,040 |
0,030 |
11,50 - 14,50 |
0,50 |
Al 0,1 – 0,3 |
U Bend Ferritic Steel Tube ASTM A268 TP405 Mechanical properties and heat treatment
|
Material grade |
Norm |
Rp 0,2 MPa |
Rp 1,0 MPa |
Rm MPa |
A |
Hardness |
Heat treatment |
|
min. |
min. |
min. max. |
min.% |
HRB max. |
|||
|
1.4002 |
EN 10297-2 |
210 |
220 |
400 |
10 |
annealed |
|
|
TP405 |
ASME SA 268/ ASTM A268 |
205 |
415 |
20 |
95 |
annealed |
Rp 0,2 = Rotation Rp 1,0 = Yield Strength Rm = Tensile Strength A = Elongation
U Bend Ferritic Steel Tube ASTM A268 TP405 Tolerances
|
OD - Tube |
OD |
WT |
special WT |
ID |
|
ab Ø4,55 mm |
±0,050 mm |
±0,150 mm |
±0,100 mm |
X |
|
ab Ø9,53 mm |
±0,050 mm |
±0,100 mm |
±0,080 mm |
±0,050 mm |
|
ab Ø30,00 mm |
±0,100 mm |
±0,150 mm |
|
±0,050 mm |
Test and inspection
Packaging and shipping
