Tianjin Bohai Metal Corporation

317L Stainless Steel

Alloy 317L (UNS S31703) is a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304. In addition, Alloy 317L offers higher creep, stress-to-rupture, and tensile strength at elevated temperatures than conventional stainless steels. It is a low carbon or "L" grade which provides resistance to sensitization during welding and other thermal processes.

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Commodity name: 317L Stainless Steel

Product information

General Properties
Alloy 317L (UNS S31703) is a lowcarbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the alloy has superior chloride pitting and general corrosion resistance to the conventional 304/304L and 316/316L grades. The alloy provides improved resistance relative to 316L in strongly corrosive environments containing sulfurous media, chlorides, and other halides.

The low carbon content of Alloy 317L enables it to be welded without intergranular corrosion resulting from chromium carbide precipitation enabling it to be used in the as-welded condition. With the addition of nitrogen as a strengthening agent, the alloy can be dual certified as Alloy 317 (UNS S31700).

Alloy 317L is non-magnetic in the annealed condition. It cannot be hardened by heat treatment, however the material will harden due to cold working. Alloy 317L can be easily welded and processed by standard shop fabrication practices.

Standard:	ASTM A240,ASME SA240,AMS 5524/5507
Thickness:	0.3 ~ 12.0mm
Width Range:	4'8ft',4'10ft',1000*2000mm,1500x3000mm etc
Brand name:	TISCO, ZPSS, BAOSTEEL, JISCO
Technique:	Cold Rolled ,Hot rolled
Forms :	Foils, Shim Sheet, Rolls, Perforated Sheet, Chequered Plate.
Applications	Pulp and Paper Textiles Water Treatment

Technical data

ALLOY	Composition (Weight Percent)			PREN1
ALLOY	Cr	Mo	N	PREN1
304 Stainless Steel	18.0	—	0.06	19.0
316 Stainless Steel	16.5	2.1	0.05	24.2
317L Stainless Steel	18.5	3.1	0.06	29.7
SSC-6MO	20.5	6.2	0.22	44.5

Chemical Analysis

Weight % (all values are maximum unless a range is otherwise indicated)

Chromium	18.0 min.-20.0 max.	Phosphorus	0.045
Nickel	11.0 min.-15.0 max.	Sulfur	0.030
Molybdenum	3.0 min. - 4.0 max.	Silicon	0.75
Carbon	0.030	Nitrogen	0.10
Manganese	2.00	Iron	Balance

Mechanical Properties

Values at 68°F (20°C) (minimum values, unless specified)

Yield Strength 0.2% Offset		Ultimate Tensile Strength		Elongation in 2 in.	Hardness
psi (min.)	(MPa)	psi (min.)	(MPa)	% (min.)	(max.)
30,000	205	75,000	515	40	95 Rockwell B