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TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength

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TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength

TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength
TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength

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Product Details:
Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001, TS16949, PED, AD2000
Model Number: SMLS
Payment & Shipping Terms:
Minimum Order Quantity: 500KGS
Packaging Details: WOODEN BOXED
Delivery Time: Ex-Mill 15 - 30DAYS
Payment Terms: T/T, L/C
Supply Ability: 100TONS/MONTH
Detailed Product Description
Material Grade: 400 Series 446 Size Range: 25.4mm
WT: 1.65mm Length: 6096mm
Specification: ASTM A268, ASME SA268 Finishing Options: Pickling, Polishing, Custom Cutting
Test Certificate: EN10204 3.1 Packaging: Wooden Box, Bundled, Export Packaging Available
Application: Boiler,Heat Exchanger Shape: Round
Product Name: TP410 Ferritic Stainless Steel Tube
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seamless stainless steel tubing


rolled stainless steel tubing

ASTM A268 TP446 High Chromium Ferritic seamless Stainless Steel Tube



The grade 446 stainless steel is a ferritic, non-heat treatable stainless steel that provides good resistance to high temperature oxidation and corrosion. The following datasheet provides more details of grade 446 stainless steel.


TP446-1 seamless stainless steel tube, TP446-1 stainless steel tube, TP446-1 seamless steel tube, TP446-1 heat exchanger tube, TP446-1 recuperator tube, S44660 heat exchanger tube, S44660 condenser tube, S44660 super ferritic steel tube.


Type 410 stainless is a martensitic alloy commonly supplied in the hardened but still machinable condition.

The alloy contains 11.5% chromium which provides good resistance to atmospheric corrosion. However, corrosion resistance is limited unless the alloy is further enhanced by processes including hardening, tempering and polishing. Type 410 displays excellent hardness after heat treatment and the material can be used in the fabrication of highly stressed parts. Weldability of the alloy is generally poor.


ASTM A268 ASME SA 268 TP410 S41000 is a martensitic stainless steel with high mechanical properties and is ferromagnetic in the annealed or hardened condition. 410 contains the minimum amount of chromium to impart stainless steel properties. 410 resists oxidation and scaling up to 1200 degF. Hardness is one of 410's best features; It resists abrasion and wear better than most 300 series stainless steel. Grade 410 is often supplied in the hardened, but still machinable condition, for applications where high strength and moderate heat and corrosion resistance are required.



Item Code: TP446
Tube OD.: 1/4'' - 2''
Wall: 0.028'' - 0.120''
Length: 20FT
Material: 410
Standard: ASTM A268 ASME SA268
Finish: Annealed & Pickled.
Type: Seamless Cold Drawn
Certification: ISO9001:2015
Mill Test Certificate: EN10204 3.1

Sleeved, Wooden Boxed



Typical Manufacturing Specifications:





TP410 is a typical martensitic chromium-alloy steel grade. It does not have the nickel content and owns the following characteristic:

- Harding by heat treatment
- High hardness with good ductility
- Good corrosion resistance capability
- Good wear corrosion resistance
- High cold-deformation property


Available Tube Product Forms:




Typical Applications:


Used for parts requiring a combination of good strength and toughness, plus reasonable corrosion resistance. Typical applications are: Bolts, Bushings, Fasteners, Gas Turbine Parts, Mine Equipment, Pump Parts, Petrochemical Equipment, Steam Turbine Parts, Studs, Valve Parts etc.

Material magnetic in all conditions.


410 - UNS S41000:

AISI Type 410 is a martensitic stainless steel that provides high strength and hardness with moderate corrosion resistance. A wide range of properties can be developed with different heat treatments, with ultimate tensile strengths ranging from 500 to 1400 MPa. It is magnetic in both the annealed and hardened conditions. High carbon content results in the formation of chromium carbide compounds, providing excellent wear resistance and edge retention when hardened. Additionally, this grade provides excellent high temperature oxidation and scaling resistance, yet is economical due to the low alloy content. Thermal conductivity is improved and thermal expansion reduced relative to austentic stainless grades.


Physical Properties:

  • Melting Point: 2729°F / 1495°C
  • Density: 0.276 lb/in3 / 7.65 g/cm3
  • Specific Graivy: 7.65
  • Modulus of Elasticity in Tension: 29 X 106 psi / 200 GPa


Mechanical Properties:

  • Temper: Annealed
  • Tensile Strength Minimum (psi): 65,000
  • Yield Strength Minimum 0.2% offset (psi): 30,000
  • % Elongation in 2” Minimum: 20%
  • Hardness: Rockwell B80
  • Temper: Hardened + 350°F
  • Tensile Strength Minimum (psi): 205,000
  • Yield Strength Minimum 2% offset (psi): 185,000
  • % Elongation in 2": 8%
  • Hardness: Rockwell C40



  • Carbon: 0.08 - 0.15
  • Manganese: 1.00
  • Phosphorus: 0.040
  • Sulfur: 0.030
  • Silicon: 1.00
  • Chromium: 11.50-13.50
  • Iron: Balance
  • All values are maximum values unless otherwise specified. Values derived from applicable AMS and ASTM specifications.


Quality Assurance:

Spezilla's seamless bright annealed stainless steel tubes are produced acc. to the following process and inspection to assure our quality:

1. Chemical Composition Analysis Test With 100% PMI.

2. Solution Annealing / Bright Annealed.

3. 100% Hydrostatic Test and 100% Eddy Current Test

4. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test.

5. Impact Test subject to Standard request.

6. Grain Size Test and Intergranular Corrosion Test.

7. Visual Test and Endoscope Test for Surface Quality Test


Grade 410S is a ferritic stainless steel that is a lowcarbon variation of ferritic type 410 stainless steel. Due to the lower level of carbon and the addition oftitanium and/or columbium, this alloy minimizesaustenite formation at higher temperatures. This alsoprevents hardening and prevents cracking whenwelding.


TP446 Chemical Composition

The chemical composition of grade 446 stainless steel is outlined in the following table.

Element Content (%)
Iron, Fe 73
Chromium, Cr 23.0 – 27.0
Manganese, Mn 1.50
Silicon, Si 1.0
Nickel, Ni 0.25
Carbon, C 0.20
Phosphorous, P 0.040
Sulfur, S 0.030


TP446 Physical Properties

The following table shows the physical properties of grade 446 stainless steel.

Properties Metric Imperial
Density 7.80 g/cm3 0.282 lb/in³

TP446 Mechanical Properties

The mechanical properties of grade 446 stainless steel are displayed in the following table

Properties Metric Imperial
Tensile strength 550 MPa 79800 psi
Yield strength (@strain 0.200%) 345 MPa 50000 psi
Elastic modulus 200 GPa 29000 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break 20% 20%
Hardness, Brinell (estimated from Rockwell B) 159 159
Hardness, Knoop (estimated from Rockwell B) 173 173
Hardness, Rockwell A (estimated from Rockwell B) 51.1 51.1
Hardness, Rockwell B 83 83
Hardness, Vickers (estimated from Rockwell B) 159 15



Grade: TP405 TP410 TP249 TP430 TP443 TP446-1 TP446-2 TP409
UNS S40500 S41000 S42900 S43000 S44300 S44600 S44600 S40800 S40900
C, max 0.08 0.15 0.12 0.12 0.20 0.20 0.12 0.08 0.08
Mn,max 1.00 1.00 1.00 1.00 1.00 1.50 1.50 1.00 1.00
P, max 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.045 0.045
S, max 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.045 0.045
Si, max 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
Ni 0.50max 0.75max 0.75max 0.50max 0.80max 0.50max
Cr 11.5-14.5 11.5-13.5 14.0-16.0 16.0-18.0 18.0-23.0 23.0-27.0 23.0-27.0 11.5-13.0 10.5-11.7
Al 0.10-0.30
Cu 0.90-1.25
N 0.25 0.25 12xCmin 6xCmin
Ti 1.10max 0.75max



TP446 High Chromium Ferritic Stainless Steel Tube High Mechanical Strength 0


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Contact Person: Will Ma

Tel: +86 13918539222

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