Austenitic steels

TP 321 • UNS S32100 • 1.4541 • TPS-INOX 4541-321

Datasheet

High carbon steels prone more to intercrystalline attack in weld zones and slower cooling sections. This steel avoids such attacks through its stabilization with Ti. The corrosion behaviour of this alloy in natural environments is very similar to the TP 304/304L alloys. Architecturally, it may not be adequate for near-industrial or onshore locations in Europe. Satisfactory in many low-chloride waters, it is prone to pitting or crevice corrosion in seawater. Water treatment, galvanic protection and deaeration can influence the performance.

Chemical composition • mass in %

Material grade Norm C
max.
Si
max.
Mn
max.
P
max.
S
max.
Cr Ni Mo Ti others
1.4541 EN 10216-5 0,080 1,00 2,00 0,040 0,015 17,50 - 19,00 9,00 - 12,00 5x% C max. 0,70
TP321 ASME SA / ASTM A 213 0,080 1,00 2,00 0,045 0,030 17,00 - 19,00 9,00 - 12,00 5x% C max. 0,70

Mechanical properties and heat treatment

Material grade Norm Rp 0,2 MPa
min.
Rp 1,0 MPa
min.
Rm MPa
min. max.
A
min.%
Hardness
HRB max.
Heat treatment
1.4541 EN 10216-5 200 235 500 - 730 35 solution annealed
TP321 ASME SA / ASTM A 213 205 515 35 90 solution annealed

Rp 0,2 = Rotation

Rp 1,0 = Yield Strength

Rm = Tensile Strength

A = Elongation

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

Scope of dimensions*

* Dimensions not shown on request

WD [mm] 0,89 1,00 1,20 1,24 1,65 1,82 2,00 2,11 2,30 2,35 2,50 2,60 2,64 2,77 2,87 3,00 3,20 3,25 3,60 3,85 3,91 4,00 4,40 5,50 6,35 7,00
AD [inch] 0,035 0,048 0,065 0,072 0,083 0,093 0,104 0,109 0,113 0,126 0,128 0,154 0,250
[mm] [inch]
6,00
6,35 0,250
7,00
7,50
8,00
9,00
9,53 0,375
10,00
11,00
12,70 0,500
13,00
15,00
15,88 0,625
16,00
16,80
17,15 0,675
18,00
19,00
19,05 0,750
20,00
21,34 0,840
22,00
22,23 0,875
23,00
25,00
25,40 1,000
26,00
26,67 1,050
28,00
30,00
31,75 1,250
32,00
33,40 1,315
36,00
38,10 1,500
42,00
44,50 1,750

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