Stainless Steel 348 is stocked by 1 North American distributors and produced by 5 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required
This material is stocked primarily in Bar Products by 1 distributors.
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Specifications
The following specifications cover Stainless Steel 348
- AISI 348
- ASTM A167
- ASTM A182
- ASTM A213
- ASTM A240
- ASTM A249
- ASTM A269
- ASTM A276
- ASTM A312
- ASTM A314
- ASTM A336
- ASTM A358
- ASTM A376
- ASTM A403
- ASTM A409
- ASTM A479
- ASTM A580
- ASTM A632
- ASTM A813
- ASTM A814
- DIN 1.4550
- MIL S-23195
- QQ S766
- UNS S34800
Property Results
Chemistry Data : [top]
Carbon
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0.08 max |
Chromium
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17 - 19 |
Cobalt
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0.2 max |
Iron
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Balance |
Manganese
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2 max |
Nickel
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9 - 13 |
Niobium+Tantalum
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Min:10 x C |
Phosphorus
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0.045 max |
Silicon
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1 max |
Sulphur
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0.03 max |
Tantalum
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0.1 max |
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Principal Design Features
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Similar to 321 stainless, 348 uses columbium/ tantalum as stabilizing elements to maximize its principal feature: resistance to intergranular corrosion. It can be used in applications requiring repeated heating in the range of 800 and 1650 F (427-899 C).
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Applications
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348 has low tantalum and cobalt and is employed in a variety of nuclear applications.
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Machinability
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Slightly tougher than 304 stainless, this material will produce the same tough stringy chips. The use of slow speeds and constant positive feeds will minimize this alloy's tendency to work harden.
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Welding
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348 may be welded by all commonly used fusion and resistance methods. Oxyacetylene welding is not recommended. When necessary, use AWS E/ER348 filler metal.
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Hot Working
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Working temperatures of 2100-2250 F (1149-1232 C) are recommended for forging, upsetting and other hot work processes. Do not work this alloy at temperatures below 1700 F ( 927 C). Material must be water quenched or fully annealed after working to reattain maximum corrosion resistance.
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Cold Working
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Although this material requires higher initial forces than 304 stainless, it is quite tough and ductile and can be readily stamped, blanked, spun and drawn.
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Annealing
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1850-2000 F (1010-1093 C), water quench. This procedure will result in maximum ductility. For maximum corrosion resistance, see the note on stabilizing anneal under corrosion.
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Hardening
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This alloy does not harden by heat treating. Elevated properties may only be obtained through cold reduction.
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Physical Data : [top]
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Density (lb / cu. in.)
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0.29
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Specific Gravity
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8.03
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Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
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0.12
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Electrical Resistivity (microhm-cm (at 68 Deg F))
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438
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Melting Point (Deg F)
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2600
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Modulus of Elasticity Tension
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28
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Mechanical Data : [top]
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MSO currently has no data available for this grade.
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Videos :
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MSO currently has no videos available for this grade.
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Disclaimer
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