330 Stainless Steel

Penn Stainless inventory now includes 330 stainless steel Plate and Processed Flat Bar (Alloy 330 UNS N08330), ideally suited for demanding, high-temperature, high-pressure applications such as chemical and petrochemical processing, thermal processing, ore processing, and power generation.

General Properties

Alloy 330 is an austenitic, nickel-chromium-iron-silicon alloy that has outstanding resistance to oxidation and carburization up to 2200°F with high strength. The excellent resistance to oxidation and carburization is provided by the high nickel and chromium content of the alloy, further enhanced by its silicon content. Alloy 330’s ultra high nickel content of 34 to 37% also provides high resistance to chloride stress corrosion cracking and embrittlement from the precipitation of sigma phase in most furnace atmospheres. Alloy 330 also has a low coefficient of expansion, excellent ductility, and high strength.

Applications:

Alloy 330 is extensively used in high temperature environments where resistance to the combined effects of thermal cycling and carburization is necessary. Applications include:

Chemical and Petrochemical Processing: cracked ammonia components, petrochemical furnace parts, heat exchangers, flares, etc

Thermal Processing: heat-treat furnace containers & compartments, high temperature fans, salt pots, etc

Ore Processing: perlite system and equipment

Power Generation: boiler fixtures, gas turbine components, etc

Value Added Services:

Need a special length?
- We can custom level 3/8″ thick x 72″ x 186″ from our plate line to reduce scrap
Polish plate inventory available
- We supply #4, #6, and #8 mirror finish
- Special polishes available
Plate processing
Dynamic water jet cutting
Plate shearing
Saw cutting
Plasma cutting and high quality plasma cutting
Machine cut rings and discs

Penn Stainless Alloy 330 Plate and Processed Flat Bar provides superior resistance to corrosion and heat exposure, in even the most demanding environments.

Corrosion Resistance

330 Stainless Steel

:

Provides high level of corrosion resistance especially with regards to oxidation, carburization, and nitridation
Has great oxidation resistance and resists scale formation up to about 2000°F due to its chromium and nickel content
Excellent resistance to carburization due to its 34 to 37% nickel and silicon content
Exhibits resistance to nitrogen containing atmospheres where the oxygen content is low
High nickel content also makes it highly resistant to chloride stress corrosion cracking and sigma phase embrittlement

Hardening:

Alloy 330 will not respond to heat treatment; will only harden upon cold work

Machinability

Rigid mounts, sulfurized lubricants, positive feeds and slow speeds are recommended for machining grade 330 stainless steel.

Welding

Grade 330 stainless steel can be welded using GAW techniques.

Hot Working

Hot working of grade 330 stainless steel can be performed at 1149 to 1177°C (2100 to 2150°F).

Cold Working

It is difficult to perform cold working in grade 330 stainless steel as the steel has high strength and work hardening rate. However, this steel can be cold worked using strong forces.

Annealing

Grade 330 stainless steel can be annealed at 1121 to 1204°C (2050 to 2200°F).

330 Stainless Steel Suppliers

1) PENN Stainless Product INC

2) Steel Mart

3) Mega Mex

4) Siddhgiri Metals & Tubes

5) Triton Alloys INC

6) Magllen Metals

7) M. Vincent & Associates Ltd.

8) Atlantic Stainless

9) Metal Suppliers Online

10) Sandmeyer Steel Company

For Promotion Of Your Company Write Your Requirements In The Comment Box And Our Business Manager Will Assist You.

Thanks & Best Regards

Samarpan Thorat
9029137339

(Marketing Manger - India)

Chemical Properties

330 Stainless Steel

:

Element	Average Nominal %
Chromium	18.00 – 22.00
Nickel	34.00 37.00
Carbon	0.08 Max
Silicon	1.00 – 1.50
Manganese	2.00 Max
Phosphorus	0.03 Max
Sulfur	0.03 Max
Copper	1.00 Max
Iron

Mechanical Properties

330 Stainless Steel

:

Tensile Strength – ksi (min.)	0.2% Offset Yield Strength – ksi (min.)	Elongation in 2 inches – % (min.)	Hardness – Rockwell B
70	30	30	90

Physical Properties:

Density (lb. / cu. in.)	Specific Gravity	Specific Heat (Btu/lb Deg F – [32-212 Deg F])	Magnetic Permeability	Modulus of Elasticity Tension
0.289	7.99	0.11	1.02	28.5

Nickel Alloy Plate

Sandmeyer Steel Company stocks Alloy 330 nickel alloy plate in thicknesses from 3/16" (4.8mm) through 1" (25.4mm) for applications in the thermal, chemical and petrochemical, and ore processing markets as well as for the power generation industry. Alloy 330 (UNS N08330) is comparable to and competes directly with RA330®.

Available thicknesses for Alloy 330:

3/16"	1/4"	3/8"	1/2"	5/8"	3/4"
4.8mm	6.3mm	9.5mm	12.7mm	15.9mm	19mm

1"
25.4mm

Alloy 330 (UNS N08330) is an austenitic nickel-iron-chromium alloy developed to provide excellent resistance to carburizing and oxidizing atmospheres at elevated temperatures. With a nickel content of 34 to 37 percent, the alloy remains highly resistant to both chloride stress corrosion cracking and embrittlement from the precipitation of sigma phase. It is readily fabricated using standard procedures for stainless steel and nickel alloys. The alloy is used extensively in elevated temperatures where resistance to the combined effects of thermal cycling and carburization is required.

Specification Sheet Overview

for Alloy 330 (UNS N08330)
Nickel-Iron-Chromium Alloy Offering Excellent Resistance to Carburizing & Oxidizing Atmospheres

General Properties

The high nickel and chromium content provides excellent resistance to both oxidation and carburization. The oxidation resistance is also enhanced by the silicon content of the alloy. The alloy performs well under cyclic conditions of heating and cooling and in alternate carburizing and oxidizing atmospheres.

Alloy 330 offers a high level of corrosion resistance, particularly to oxidation, carburization, and nitridation. It is readily fabricated using standard procedures for stainless steels and nickel alloys. The alloy is used extensively in elevated temperature atmospheres where resistance to the combined effects of thermal cycling and carburization is required.

Applications

Chemical and Petrochemical Processing
- Cracked ammonia components
- Petrochemical furnace parts
- Petrochemical waste remediation units
- Heat exchangers
- Flares
Ore Processing
- Perlite systems and equipment
Power Generation
- Boiler fixtures
- Gas turbine components
Thermal Processing

Heat-treat furnace containers
Heat-treat furnace components
High temperature fans
Salt pots

Standards
ASTM..................B 536
ASME..................SB 536
AMS...................5592

Chemical Analysis

Typical Values (Weight %)


Nickel	34.0 - 37.0	Chromium	17.0 - 20.0
Iron	Balance*	Carbon	0.08 max.
Silicon	0.75 - 1.50	Manganese	2.0 max.
Phosphorus	0.030 max.	Sulfur	0.030 max.

*Alloy predominates remaining composition. Other elements may be present only in minimal quantities.

Physical Properties

330 Stainless Steel

Density

0.292 lbs/in3
8.08 g/cm3

Specific Heat

0.11 BTU/lb°F (32-212°F)
460 J/kg°C (0-100°C)

Magnetic Permeability

1.02 at 70°F/20°C (RT)

Linear Coefficient of Thermal Expansion

Thermal and Electrical Properties

Temperature		Thermal Conductivity		Electrical Resistivity
°F	°C	Btu-in/ft2M/-h-°F	W/m-°C	ohm-circ mil/ft	mW-m
75	24	86	12.4	612	1.017
400	204	108	15.6	649	1.079
800	227	134	19.3	688	1.144
1200	649	162	23.4	721	1.199
1600	871	198	28.6	744	1.237
1800	982	216	31.2	749	1.245

Mechanical Properties

330 Stainless Steel

Typical Room Temperature Mechanical Properties, Mill Annealed

Yield Strength 0.2% Offset		Ultimate Tensile Strength		Elongation in 2 inches (50mm)	Hardness
ksi	(MPa)	ksi	(MPa)	%	Rockwell B
30 - 43	207 - 296	80 - 85	552 - 586	40 - 45	70 - 85

High Temperature Mechanical Properties
Tensile Properties of Annealed Material

Corrosion Resistance

330 Stainless Steel

Alloy 330 provides a high level of corrosion resistance, particularly to oxidation, carburization, and nitridation. In aqueous environments the chromium content of 330 provides resistance to oxidizing conditions, while the nickel content enhances resistance to reducing conditions. The alloyâ€™s high nickel content also makes it highly resistant to chloride stress corrosion cracking and sigma phase embrittlement.

Oxidation Resistance

Alloy 330 has good oxidation resistance and resists scale formation up to about 2000°F (1095°C). Any scale which is formed is tightly adherent, particularly under cyclic conditions of heating and cooling.

Carburization Resistance

330 Stainless Steel

The alloy's 35 percent nickel content and silicon addition contribute greatly to its excellent resistance to carburization. In alternating carburizing and oxidizing atmospheres, Alloy 330 exhibits excellent resistance to the â€œgreen rotâ€ phenomenon.

Nitridation Resistance

330 Stainless Steel

Alloy 330 exhibits good resistance to nitrogen-containing atmospheres where the oxygen content is low. It is used extensively in components handling cracked ammonia.

Heat Treatment

Alloy 330 is an austenitic alloy that cannot be hardened by thermal treatment. Only cold working will contribute to increased room temperature strength. For most high temperature applications, 330 is not annealed after cold forming or welding.

If a full anneal is required, it should be carried out in a temperature range of 1870-2050°F (1020-1120°C). Water quenching provides the optimum creep resistance, but rapid air cooling to below 800°F (425°C) may also be utilized.

Fabrication

Alloy 330 is readily hot or cold formed using the standard procedures for austenitic stainless steels and nickel alloys. The work hardening rate of the alloy is comparable to austenitic stainless steels.

Forming at room temperature is suggested. If hot working is required, the alloy should be heated uniformly to a starting temperature of 2050-2150°F (1120-1180°C) and finished above 1750Â¼F (950°C). Cooling should be by water quenching or as fast as possible. Annealing is recommended after hot working to ensure maximum corrosion resistance and optimum grain structure.

Forming or bending should not take place in the low ductility range of 1200-1600°F (650-870°C). This can cause intergranular tearing in austenitic alloys.

Welding

Alloy 330 can be welded by GTAW, SMAW, and plasma arc processes. For optimum corrosion resistance GTAW is preferred.

Prior to welding, the material should be in the annealed condition, clean and free from scale, grease, and other contaminants. A zone approximately 1 inch wide on each side of the joint should be ground to bright metal.

The interpass temperature should not exceed 300°F (150°C). Neither pre- nor post-weld heat treatment is required. Alloy 330 can be readily welded to a variety of dissimilar metals.

NOTE: The information and data in this product data sheet are accurate to the best of our knowledge and belief, but are intended for informational purposes only, and may be revised at any time without notice. Applications suggested for the materials are described only to help readers make their own evaluations and decisions, and are neither guarantees nor to be construed as express or implied warranties of suitability for these or other applications.