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ATI Allegheny Ludlum AL 444™ Ferritic Stainless Steel
| Category | Metal , Ferrous Metal , Ferritic , Stainless Steel , T S40000 Series Stainless Steel |
| Manufacturer | ATI Allegheny Ludlum |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | ATI Allegheny Ludlum AL 444™ Ferritic Stainless Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Low carbon, low nitrogen ferritic stainless steel alloy. Characteristics:practically immune to chloride stress corrosion cracking, enhanced resistance to pitting and crevicing, good general corrosion resistance, good creep resistance. Applications: heat exchangers tubing, food processing equipment, automotive exhausts, and hot water tanks. Information provided by Allegheny Ludlum
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 7.75 g/cc | 0.280 lb/in³ |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell B | 80 | 80 | |
| Tensile Strength, Ultimate | 517 MPa | 75000 psi | |
| Tensile Strength, Yield | 345 MPa @Strain 0.200 % |
50000 psi @Strain 0.200 % |
|
| Elongation at Break | 30 % | 30 % | in 2" |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 11.0 µm/m-°C @Temperature 20.0 - 200 °C |
6.11 µin/in-°F @Temperature 68.0 - 392 °F |
|
| Specific Heat Capacity | 0.427 J/g-°C | 0.102 BTU/lb-°F | |
| Thermal Conductivity | 26.8 W/m-K @Temperature 100 °C |
186 BTU-in/hr-ft²-°F @Temperature 212 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Carbon, C | 0.013 % | 0.013 % | |
| Chromium, Cr | 18.2 % | 18.2 % | |
| Iron, Fe | >= 79.79 % | >= 79.79 % | As Remainder |
| Manganese, Mn | 0.30 % | 0.30 % | |
| Molybdenum, Mo | 1.9 % | 1.9 % | |
| Nickel, Ni | <= 0.50 % | <= 0.50 % | |
| Niobium, Nb (Columbium, Cb) | 0.27 % | 0.27 % | |
| Nitrogen, N | 0.015 % | 0.015 % | |
| Other | 0.40 % | 0.40 % | |
| Phosphorous, P | <= 0.030 % | <= 0.030 % | |
| Silicon, Si | 0.45 % | 0.45 % | |
| Sulfur, S | <= 0.0020 % | <= 0.0020 % | |
| Titanium, Ti | 0.13 % | 0.13 % |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Corrosion Rate mils per year | >1000 | 10% Sulfamic Acid, Boiling |
| >1000 | 10% Sulfuric Acid, Boiling | |
| 0.1 | 20% Acetic Acid, Boiling | |
| 1.7 | 1% Hydrochloric Acid, Boiling | |
| 101 | 10% Oxalic Acid, Boiling | |
| 18 | 65% Nitric Acid, Boiling | |
| 2.3 | 20% Phosphoric Acid, Boiling | |
| 27.1 | 45% Formic Acid, Boiling | |
| 293 | 50% Sodium Hydroxide, Boiling | |
| Pitting Potential, Volts vs. Sat. Calomel Electrode | 0.58 | |
| Stress Corrosion Cracking Resistance (ASTM G30) | Pass | 42% MgCl2 |
| Pass | 33% LiCl | |
| Pass | 26% NaCl |
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