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Metalmen Sales

AK Steel NITRONIC® 30 Austenitic Stainless Steel
Categories: Metal; Ferrous Metal; Stainless Steel
Material Notes: AK Steel NITRONIC 30 Stainless Steel offers significantly higher strength than Type 304 and potential for applications requiring good resistance to aqueous and atmospheric corrosion resistance combined with good toughness and economy. Specific potential applications include automotive hose clamps, safety belt anchors, truck and bus frames, water supply and control structures, sewage treatment plant structures, bulk solids handling equipment, magnetic ore separator screens, coal buckets and hopper cars. Stainless steels have served successfully in many structural components in the transportation industry. Bus space frames and bumpers take advantage of the excellent fabricability and high strength and toughness of stainless steel. Tensilized NITRONIC 30 Stainless Steel has been used in rapid transit structurals where the strength-to-weight ratio of up to three times that of carbon steel has improved operating efficiency. Rear frames of refrigerated trucks are easily welded and formed from NITRONIC 30 Stainless Steel, resulting in protective units that can withstand impact blows without cracking. Shipboard container structurals use stainless steel successfully where carbon steel becomes scuffed and rusts wherever the paint is damaged.

AK Steel NITRONIC 30 is a nitrogen-strengthened stainless steel developed for applications requiring a good level of aqueous corrosion resistance combined with good toughness and economy. AK Steel NITRONIC 30 Stainless Steel provides approximately 50% higher yield strength than Type 304L and, therefore, may allow lighter gauges to further reduce costs. AK Steel NITRONIC 30 Stainless Steel work hardens rapidly while retaining good ductility. Unlike other nitrogen-strengthened stainless steels, AK Steel NITRONIC 30 Stainless Steel is subject to magnetic transformation when cold worked.

Information provided by AK Steel
Key Words: UNS S20400
Vendors: Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494.

Click here to view all available suppliers for this material.

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Physical PropertiesMetricEnglishComments
Density 7.86 g/cc0.284 lb/in³Based on UNS number
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell B 95950% Cold Work
 92.5
@Temperature 23.9 °C		92.5
@Temperature 75.0 °F		Plate
 96.5
@Temperature 23.9 °C		96.5
@Temperature 75.0 °F
 92
@Thickness 22.2 mm		92
@Thickness 0.875 in		Typical for Plate, Annealed, in 2"
 93
@Thickness 1.63 mm		93
@Thickness 0.0640 in		Annealed at 2050°F, Longitudinal
 93
@Thickness 1.63 mm		93
@Thickness 0.0640 in		Annealed at 2050°F, Transverse
 93.5
@Thickness 3.15 mm		93.5
@Thickness 0.124 in		Annealed at 1950°F, Longitudinal
 94
@Thickness 9.52 mm		94
@Thickness 0.375 in		Typical for Plate, Annealed
 94
@Thickness 0.813 mm		94
@Thickness 0.0320 in		Annealed at 1950°F, Longitudinal
 94
@Thickness 0.813 mm		94
@Thickness 0.0320 in		Annealed at 1950°F, Longitudinal
Hardness, Rockwell C 313110% Cold Work
 373720% Cold Work
 434330% Cold Work
 454540% Cold Work
 33.5
@Thickness 4.762 mm		33.5
@Thickness 0.1875 in		Typical for Plate, 1/4-Hard, Longitudinal
 33.5
@Thickness 4.762 mm		33.5
@Thickness 0.1875 in		Typical for Plate, 1/4-Hard, Transverse
 34
@Thickness 6.35 mm		34
@Thickness 0.250 in		Typical for Plate, 1/4-Hard, Longitudinal
 34
@Thickness 6.35 mm		34
@Thickness 0.250 in		Typical for Plate, 1/4-Hard, Transverse
Tensile Strength, Ultimate 862 MPa125000 psi0% Cold Work
 1034 MPa150000 psi10% Cold Work
 1193 MPa173000 psi20% Cold Work
 1338 MPa194100 psi30% Cold Work
 1467 MPa212800 psi40% Cold Work
 417 MPa
@Temperature 538 °C		60500 psi
@Temperature 1000 °F		Plate
 439 MPa
@Temperature 482 °C		63700 psi
@Temperature 900 °F		Plate
 459 MPa
@Temperature 538 °C		66500 psi
@Temperature 1000 °F		Sheet
 460 MPa
@Temperature 427 °C		66700 psi
@Temperature 800 °F		Plate
 480 MPa
@Temperature 371 °C		69600 psi
@Temperature 700 °F		Plate
 485 MPa
@Temperature 482 °C		70300 psi
@Temperature 900 °F		Sheet
 487 MPa
@Temperature 260 °C		70600 psi
@Temperature 500 °F		Plate
 488 MPa
@Temperature 316 °C		70800 psi
@Temperature 600 °F		Plate
 496 MPa
@Temperature 204 °C		71900 psi
@Temperature 400 °F		Plate
 506 MPa
@Temperature 427 °C		73400 psi
@Temperature 800 °F		Sheet
 529 MPa
@Temperature 371 °C		76700 psi
@Temperature 700 °F		Sheet
 539 MPa
@Temperature 149 °C		78200 psi
@Temperature 300 °F		Plate
 547 MPa
@Temperature 316 °C		79300 psi
@Temperature 600 °F		Sheet
 547 MPa
@Temperature 260 °C		79300 psi
@Temperature 500 °F		Sheet
 561 MPa
@Temperature 204 °C		81400 psi
@Temperature 400 °F		Sheet
 598 MPa
@Temperature 149 °C		86800 psi
@Temperature 300 °F		Sheet
 630 MPa
@Temperature 93.3 °C		91400 psi
@Temperature 200 °F		Plate
 692 MPa
@Temperature 93.3 °C		100000 psi
@Temperature 200 °F		Sheet
 845 MPa
@Temperature 23.9 °C		123000 psi
@Temperature 75.0 °F		Sheet
 850 MPa
@Temperature 23.9 °C		123000 psi
@Temperature 75.0 °F		Plate
 689 MPa
@Thickness 1.63 mm		99900 psi
@Thickness 0.0640 in		Annealed at 2050°F, Longitudinal
 711 MPa
@Thickness 1.63 mm		103000 psi
@Thickness 0.0640 in		Annealed at 2050°F, Transverse
 786 MPa
@Thickness 9.52 mm		114000 psi
@Thickness 0.375 in		Typical for Plate, Annealed
 811 MPa
@Thickness 3.15 mm		118000 psi
@Thickness 0.124 in		Annealed at 1950°F, Longitudinal
 825 MPa
@Thickness 0.813 mm		120000 psi
@Thickness 0.0320 in		Annealed at 1950°F, Longitudinal
 827 MPa
@Thickness 50.8 mm		120000 psi
@Thickness 2.00 in		Typical for Plate, Annealed
 840 MPa
@Thickness 0.813 mm		122000 psi
@Thickness 0.0320 in		Annealed at 1950°F, Longitudinal
 855 MPa
@Thickness 22.2 mm		124000 psi
@Thickness 0.875 in		Typical for Plate, Annealed
 998 MPa
@Thickness 6.35 mm		145000 psi
@Thickness 0.250 in		Typical for Plate, 1/4-Hard, Longitudinal
 1011 MPa
@Thickness 6.35 mm		146600 psi
@Thickness 0.250 in		Typical for Plate, 1/4-Hard, Transverse
 1020 MPa
@Thickness 4.762 mm		148000 psi
@Thickness 0.1875 in		Typical for Plate, 1/4-Hard, Longitudinal
 1025 MPa
@Thickness 4.762 mm		148700 psi
@Thickness 0.1875 in		Typical for Plate, 1/4-Hard, Transverse
Tensile Strength, Yield  345 MPa
@Strain 0.2 %		50000 psi
@Strain 0.2 %		Typical for Plate, Annealed, 0.875"
 358 MPa
@Strain 0.2 %		51900 psi
@Strain 0.2 %		Typical for Plate, Annealed, 2"
 393 MPa
@Strain 0.2 %		57000 psi
@Strain 0.2 %		Typical for Plate, Annealed, 0.0375"
 393 MPa
@Strain 0.2 %		57000 psi
@Strain 0.2 %		0% Cold Work
 593 MPa
@Strain 0.2 %		86000 psi
@Strain 0.2 %		10% Cold Work
 702 MPa
@Strain 0.2 %		102000 psi
@Strain 0.2 %		Typical for Plate, 1/4-Hard, Longitudinal, 0.25"
 717 MPa
@Strain 0.2 %		104000 psi
@Strain 0.2 %		Typical for Plate, 1/4-Hard, Longitudinal, 0.1875'
 759 MPa
@Strain 0.2 %		110000 psi
@Strain 0.2 %		Typical for Plate, 1/4-Hard, Transverse, 0.25"
 768 MPa
@Strain 0.2 %		111000 psi
@Strain 0.2 %		Typical for Plate, 1/4-Hard, Transverse, 0.1875"
 779 MPa
@Strain 0.2 %		113000 psi
@Strain 0.2 %		20% Cold Work
 979 MPa
@Strain 0.2 %		142000 psi
@Strain 0.2 %		30% Cold Work
 1186 MPa
@Strain 0.2 %		172000 psi
@Strain 0.2 %		40% Cold Work
 131 MPa
@Strain 0.2 %,
Temperature 538 °C		19000 psi
@Strain 0.2 %,
Temperature 1000 °F		Plate
 155 MPa
@Strain 0.2 %,
Temperature 482 °C		22500 psi
@Strain 0.2 %,
Temperature 900 °F		Plate
 157 MPa
@Strain 0.2 %,
Temperature 427 °C		22800 psi
@Strain 0.2 %,
Temperature 800 °F		Plate
 168 MPa
@Strain 0.2 %,
Temperature 371 °C		24400 psi
@Strain 0.2 %,
Temperature 700 °F		Plate
 174 MPa
@Strain 0.2 %,
Temperature 316 °C		25200 psi
@Strain 0.2 %,
Temperature 600 °F		Plate
 182 MPa
@Strain 0.2 %,
Temperature 260 °C		26400 psi
@Strain 0.2 %,
Temperature 500 °F		Plate
 187 MPa
@Strain 0.2 %,
Temperature 538 °C		27100 psi
@Strain 0.2 %,
Temperature 1000 °F		Sheet
 190 MPa
@Strain 0.2 %,
Temperature 204 °C		27600 psi
@Strain 0.2 %,
Temperature 400 °F		Plate
 197 MPa
@Strain 0.2 %,
Temperature 482 °C		28600 psi
@Strain 0.2 %,
Temperature 900 °F		Sheet
 207 MPa
@Strain 0.2 %,
Temperature 427 °C		30000 psi
@Strain 0.2 %,
Temperature 800 °F		Sheet
 217 MPa
@Strain 0.2 %,
Temperature 371 °C		31500 psi
@Strain 0.2 %,
Temperature 700 °F		Sheet
 222 MPa
@Strain 0.2 %,
Temperature 149 °C		32200 psi
@Strain 0.2 %,
Temperature 300 °F		Plate
 233 MPa
@Strain 0.2 %,
Temperature 316 °C		33800 psi
@Strain 0.2 %,
Temperature 600 °F		Sheet
 241 MPa
@Strain 0.2 %,
Temperature 260 °C		34900 psi
@Strain 0.2 %,
Temperature 500 °F		Sheet
 259 MPa
@Strain 0.2 %,
Temperature 204 °C		37600 psi
@Strain 0.2 %,
Temperature 400 °F		Sheet
 266 MPa
@Strain 0.2 %,
Temperature 93.3 °C		38600 psi
@Strain 0.2 %,
Temperature 200 °F		Plate
 283 MPa
@Strain 0.2 %,
Temperature 149 °C		41100 psi
@Strain 0.2 %,
Temperature 300 °F		Sheet
 326 MPa
@Strain 0.2 %,
Temperature 93.3 °C		47300 psi
@Strain 0.2 %,
Temperature 200 °F		Sheet
 362 MPa
@Strain 0.2 %,
Temperature 23.9 °C		52500 psi
@Strain 0.2 %,
Temperature 75.0 °F		Plate
 435 MPa
@Strain 0.2 %,
Temperature 23.9 °C		63100 psi
@Strain 0.2 %,
Temperature 75.0 °F		Sheet
 368 MPa
@Strain 0.2 %,
Thickness 1.63 mm		53400 psi
@Strain 0.2 %,
Thickness 0.0640 in		Annealed at 2050°F, Transverse
 370 MPa
@Strain 0.2 %,
Thickness 1.63 mm		53700 psi
@Strain 0.2 %,
Thickness 0.0640 in		Annealed at 2050°F, Longitudinal
 372 MPa
@Strain 0.2 %,
Thickness 3.15 mm		54000 psi
@Strain 0.2 %,
Thickness 0.124 in		Annealed at 1950°F, Longitudinal
 375 MPa
@Strain 0.2 %,
Thickness 0.813 mm		54400 psi
@Strain 0.2 %,
Thickness 0.0320 in		Annealed at 1950°F, Longitudinal
 379 MPa
@Strain 0.2 %,
Thickness 0.813 mm		55000 psi
@Strain 0.2 %,
Thickness 0.0320 in		Annealed at 1950°F, Longitudinal
Elongation at Break 15 %15 %In 2", 40% Cold Work
 18 %18 %In 2", 30% Cold Work
 25 %25 %In 2", 20% Cold Work
 35 %35 %In 2",10% Cold Work
 49 %49 %In 2", 0% Cold Work
 42.9 %
@Temperature 538 °C		42.9 %
@Temperature 1000 °F		In 2", Plate
 46.4 %
@Temperature 316 °C		46.4 %
@Temperature 600 °F		In 2", Plate
 47.7 %
@Temperature 482 °C		47.7 %
@Temperature 900 °F		In 2", Plate
 48 %
@Temperature 204 °C		48 %
@Temperature 400 °F		In 2", Plate
 48.3 %
@Temperature 427 °C		48.3 %
@Temperature 800 °F		In 2", Plate
 48.6 %
@Temperature 260 °C		48.6 %
@Temperature 500 °F		In 2", Plate
 49 %
@Temperature 371 °C		49 %
@Temperature 700 °F		In 2", Plate
 50 %
@Temperature 23.9 °C		50 %
@Temperature 75.0 °F		In 2", Plate
 65.5 %
@Temperature 149 °C		65.5 %
@Temperature 300 °F		In 2", Plate
 77.8 %
@Temperature 93.3 °C		77.8 %
@Temperature 200 °F		In 2", Plate
 29.6 %
@Thickness 6.35 mm		29.6 %
@Thickness 0.250 in		In 2", Typical for Plate, 1/4-Hard, Transverse
 31.5 %
@Thickness 4.762 mm		31.5 %
@Thickness 0.1875 in		In 2", Typical for Plate, 1/4-Hard, Transverse
 35.5 %
@Thickness 4.762 mm		35.5 %
@Thickness 0.1875 in		In 2", Typical for Plate, 1/4-Hard, Longitudinal
 35.5 %
@Thickness 6.35 mm		35.5 %
@Thickness 0.250 in		In 2", Typical for Plate, 1/4-Hard, Longitudinal
 31 - 40 %
@Thickness 50.8 mm		31 - 40 %
@Thickness 2.00 in		Typical, (Gauge, 0.028" -0.084")
 50 %
@Thickness 22.2 mm		50 %
@Thickness 0.875 in		In 2", Typical for Plate, Annealed
 52 %
@Thickness 3.15 mm		52 %
@Thickness 0.124 in		In 2", Annealed at 1950°F, Longitudinal
 54 %
@Thickness 0.813 mm		54 %
@Thickness 0.0320 in		In 2", Annealed at 1950°F, Longitudinal
 54 %
@Thickness 50.8 mm		54 %
@Thickness 2.00 in		In 2", Typical for Plate, Annealed
 55 %
@Thickness 0.813 mm		55 %
@Thickness 0.0320 in		In 2", Annealed at 1950°F, Longitudinal
 56 %
@Thickness 9.52 mm		56 %
@Thickness 0.375 in		In 2", Typical for Plate, Annealed
 58 %
@Thickness 1.63 mm		58 %
@Thickness 0.0640 in		In 2", Annealed at 2050°F, Transverse
 58.5 %
@Thickness 1.63 mm		58.5 %
@Thickness 0.0640 in		In 2", Annealed at 2050°F, Longitudinal
 34.1 %
@Thickness 50.8 mm,
Temperature 538 °C		34.1 %
@Thickness 2.00 in,
Temperature 1000 °F		in 2", Sheet
 40.7 %
@Thickness 50.8 mm,
Temperature 482 °C		40.7 %
@Thickness 2.00 in,
Temperature 900 °F		in 2", Sheet
 41.30 %
@Thickness 50.8 mm,
Temperature 260 °C		41.30 %
@Thickness 2.00 in,
Temperature 500 °F		in 2", Sheet
 41.30 %
@Thickness 50.8 mm,
Temperature 316 °C		41.30 %
@Thickness 2.00 in,
Temperature 600 °F		in 2", Sheet
 43.7 %
@Thickness 50.8 mm,
Temperature 427 °C		43.7 %
@Thickness 2.00 in,
Temperature 800 °F		in 2", Sheet
 44.3 %
@Thickness 50.8 mm,
Temperature 371 °C		44.3 %
@Thickness 2.00 in,
Temperature 700 °F		in 2", Sheet
 44.8 %
@Thickness 50.8 mm,
Temperature 204 °C		44.8 %
@Thickness 2.00 in,
Temperature 400 °F		in 2", Sheet
 46.8 %
@Thickness 50.8 mm,
Temperature 23.9 °C		46.8 %
@Thickness 2.00 in,
Temperature 75.0 °F		in 2", Sheet
 53.7 %
@Thickness 50.8 mm,
Temperature 149 °C		53.7 %
@Thickness 2.00 in,
Temperature 300 °F		in 2", Sheet
 63.3 %
@Thickness 50.8 mm,
Temperature 93.3 °C		63.3 %
@Thickness 2.00 in,
Temperature 200 °F		in 2", Sheet
Charpy Impact, Unnotched 294 J217 ft-lbTypical for Plate, Annealed
Charpy Impact, Notched  108.2 J/cm²
@Thickness 2.84 mm,
Temperature -101 °C		514.9 ft-lb/in²
@Thickness 0.112 in,
Temperature -150 °F		Base Metal
 128.4 J/cm²
@Thickness 2.84 mm,
Temperature 0.000 °C		611.1 ft-lb/in²
@Thickness 0.112 in,
Temperature 32.0 °F		Base Metal
 133.7 J/cm²
@Thickness 2.84 mm,
Temperature 23.9 °C		636.3 ft-lb/in²
@Thickness 0.112 in,
Temperature 75.0 °F		Base Metal
 
Thermal PropertiesMetricEnglishComments
CTE, linear  16.8 µm/m-°C
@Temperature 26.1 - 93.3 °C		9.35 µin/in-°F
@Temperature 79.0 - 200 °F
 17.3 µm/m-°C
@Temperature 26.1 - 149 °C		9.60 µin/in-°F
@Temperature 79.0 - 300 °F
 17.7 µm/m-°C
@Temperature 26.1 - 204 °C		9.81 µin/in-°F
@Temperature 79.0 - 400 °F
 18.0 µm/m-°C
@Temperature 26.1 - 260 °C		10.0 µin/in-°F
@Temperature 79.0 - 500 °F
 18.3 µm/m-°C
@Temperature 26.1 - 316 °C		10.2 µin/in-°F
@Temperature 79.0 - 600 °F
 18.6 µm/m-°C
@Temperature 26.1 - 371 °C		10.4 µin/in-°F
@Temperature 79.0 - 700 °F
 18.9 µm/m-°C
@Temperature 26.1 - 427 °C		10.5 µin/in-°F
@Temperature 79.0 - 800 °F
 19.1 µm/m-°C
@Temperature 26.1 - 482 °C		10.6 µin/in-°F
@Temperature 79.0 - 900 °F
 19.4 µm/m-°C
@Temperature 26.1 - 538 °C		10.8 µin/in-°F
@Temperature 79.0 - 1000 °F
 19.6 µm/m-°C
@Temperature 26.1 - 593 °C		10.9 µin/in-°F
@Temperature 79.0 - 1100 °F
 19.8 µm/m-°C
@Temperature 26.1 - 649 °C		11.0 µin/in-°F
@Temperature 79.0 - 1200 °F
 20.0 µm/m-°C
@Temperature 26.1 - 704 °C		11.1 µin/in-°F
@Temperature 79.0 - 1300 °F
 20.18 µm/m-°C
@Temperature 26.1 - 760 °C		11.21 µin/in-°F
@Temperature 79.0 - 1400 °F
 20.36 µm/m-°C
@Temperature 26.1 - 816 °C		11.31 µin/in-°F
@Temperature 79.0 - 1500 °F
 20.56 µm/m-°C
@Temperature 26.1 - 871 °C		11.42 µin/in-°F
@Temperature 79.0 - 1600 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.030 %<= 0.030 %
Chromium, Cr 15 - 17 %15 - 17 %
Copper, Cu <= 1.0 %<= 1.0 %
Iron, Fe 68.6 - 76.35 %68.6 - 76.35 %Balance
Manganese, Mn 7.0 - 9.0 %7.0 - 9.0 %
Nickel, Ni 1.5 - 3.0 %1.5 - 3.0 %
Nitrogen, N 0.15 - 0.30 %0.15 - 0.30 %
Phosphorus, P <= 0.040 %<= 0.040 %
Silicon, Si <= 1.0 %<= 1.0 %
Sulfur, S <= 0.030 %<= 0.030 %
 
Descriptive Properties
'n' Value0.19Strain Hardening Coefficient, Typical, (Gauge, 0.028" -0.084")
Olsen Cup Height0.330"-0.450"Typical, (Gauge, 0.028" -0.084")

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