Type 302 Stainless Steel is an austenitic chromium-nickel stainless steel, non-hardenable by thermal treatments. It may be cold worked to high tensile strengths with slightly lower ductility than Type 301. Its corrosion resistance is superior to that of Type 301. Type 302 is essentially nonmagnetic in the annealed condition and becomes slightly magnetic when cold worked.
Sheet, plate , Strip, pipe ,tube ,bar ,profiles
Equivalent Materials
SAE 302
JIS SUS302
ASTM MT302
ASTM 302
UNS S30200
DIN 1.4324
AISI 301
SAE 301
JIS SUS301J1
EN FE-PA 18
EN 1.4324
ASTM 301
302
ASTM MT301
321 Stainless Steel Specifications:
ASTM A240 for annealed condition
ASTM A666 for tempered material
Hot Rolled Strip Available Size
Width: 16.0~609.6 mm
Thickness: 2.5~10.0 mm
Available Steel Grade:
Cold Rolled Strip Available Size
Width: 4.0~609.6 mm
Thickness: 0.1~3.0 mm
Surface Finish:
2B, 2D, BA, No.3, No.4, No.5, SB, HL, etc
Surface finish | Characteristics and application |
NO.2B | The surface brightness and flatness of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties,No2B could nearly satisfy compreh ensive uses. |
NO.1 | The surface is finished by heat treatment and pickling or processes corresponding thereto after hot rolling. |
NO.4 | Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous coarse stria,but thinner than No3, are used as bathtub buildings inner and external ornaments electrical appliances kitchen utensils and food processing equipment etc. |
HL | Polished with abrasive belt of grit #150#320 on the NO.4 finish and has continuous streaks,mainly used as buildingsornaments elevators,door of building,frontal plate etc. |
BA | Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror,kitchen apparatus,ornament etc. |
8K | The product have excellent brightness and prefer reflexivity can to be the mirror. |
Condition :
ANNEALED CONDITION
Ultimate Tensile Strength: 95 KSI min (655 MPA min) Yield Strength (0.2% Offset): 38 KSI min (260 MPA min) Elongation: 40%min Hardness: B95 max
TEMPERED 1/16 HARD
Ultimate Tensile Strength: 95 KSI min (655 MPA min) Yield Strength (0.2% Offset): 45 KSI min (310 MPA min) Elongation: 40% min
Tempered 1/8 Hard Ultimate Tensile Strength: 100 KSI min (690 MPA min) Yield Strength (0.2% Offset): 55 KSI min (380 MPA min) Elongation: 45% min
TEMPERED 1/4 HARD
Ultimate Tensile Strength: 125 KSI min (860 MPA min) Yield Strength (0.2% Offset): 75 KSI min (515 MPA min) Elongation: 25% min
TEMPERED 1/2 HARD
Ultimate Tensile Strength: 150 KSI min (1035 MPA min) Yield Strength (0.2% Offset): 110 KSI min (760 MPA min) Elongation: 15% < 0.15" 18% > 0.15"
TEMPERED 3/4 HARD
Ultimate Tensile Strength: 175 KSI min (1205 MPA min) Yield Strength (0.2% Offset): 135 KSI min (930 MPA min) Elongation: 10% < 0.15" 12% > 0.15"
TEMPERED FULL HARD
Ultimate Tensile Strength: 185 KSI min (1275 MPA min) Yield Strength (0.2% Offset): 140 KSI min (965 MPA min) Elongation: 8% < 0.15" 9% > 0.15"
Available Steel Grade:
Stainless steel : Type 201, 202, 205, 301, 302, 302B, 303, 303Se, 304, 304L, 302HQ, 304N, 305, 308, 309, 309S, 310, 310S, 314, 316, 316L, 316F, 316N, 317, 317L, 317LMN, 321, 330, 347, 348, 384, 405, 409, 429, 430, 430F, 430FSe, 434, 436, 442, 446, 403, 410, 414, 416, 416Se, 420, 420F, 422, 431, 440A, 440B, 440C, 630 , 13-8 PH ,15-5 PH , 17-7 PH ,17-4 ph , 904L , A286 ,VG-10 , SAE 316 , SAE 316L , SAE 440 , SAE 420
Duplex stainless steel : 2205 , 2304 , 2507
Nickel alloy :
Titanium and titanium alloys
Automotive and architectural trim, springs, kitchen and restaurant equipment and utensils, dairy and food processing equipment
CHEMICAL COMPOSITION: (ASTM A240, A666)
Element | Type |
---|---|
Carbon | 0.15 max. |
Manganese | 2.00 max. |
Sulfur | 0.030 max. |
Phosphorus | 0.045 max. |
Silicon | 0.75 max. |
Chromium | 17.00 -19.00 |
Nickel | 8.00 – 10.00 |
Nitrogen | 0.10 max. |
MECHANICAL PROPERTIES: (ASTM A240, A666)
Type | Yield Strength 0.2% offset (KSI) | Tensile Strength (KSI) | % Elongation (2″ Gauge length) |
---|---|---|---|
302 Ann | 30 min. | 75 min. | 40 min. |
302 ¼ Hard | 75 min. | 125 min. | 12 min. |
302 ½ Hard | 110 min. | 150 min. | 10 min. |
302 ¾ Hard | 135 min. | 175 min. | 6 min. |
302 Full Hard | 145 min. | 185 min. | 4 min. |
PHYSICAL PROPERTIES: (ANNEALED)
Density (lb./ in^2) @ RT |
| 0.29 |
---|---|---|
Modulus of Elasticity in Tension (psi x 10^6) |
| 28.0 |
Specific Heat (BTU/o F/lb.) | 32 to 212 oF | 0.12 |
Thermal Conductivity (BTU/hr/ft^2/ft) | 212oF | 9.4 |
| 932oF | 12.4 |
Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) | 32 to 212oF | 9.6 |
| 32 to 600oF | 9.9 |
| 32 to 1,000oF | 10.2 |
| 32 to 1,200oF | 10.4 |
Electrical Resistivity (micro ohms – cm) | at 70oF | 72.0 |
Melting Point Range (oF) |
| 2550/2590 |
Oxidation Resistance – Continuous Service(oF) |
| 1650 |
Oxidation Resistance – Intermittent Service(oF) |
| 1500 |
PROCESSING:
Hardening Type 302 can be hardened only by cold working. Annealing Heat in the range of 1850-2050°F and cool rapidly. Light gauges (under 16 gauge) may be air cooled. Heavier sections require water quenching from annealing temperature. Stress Relieving The recommended temperature range for stress relieving is 400-750°F.
FORMING:
Type 302 can be formed into most shapes. It work hardens rapidly, so it may be necessary to anneal between forming steps.
WELDING:
Type 302 is weldable by electric arc, gas fusion or electrical resistance processes. In heavy sections, the material may develop poor resistance to chemical attack due to to carbide precipitation in the heat affected region of the weld. Restoration of normal corrosion resistance can be obtained by heating to 1750-2000°F and cooling rapidly. If subsequent annealing is impractical, then Type 304L or one of the stabilized grades should be used. Type 308 filler metal is used for welding Type 302.
CORROSION:
Type 302 stainless steel in the annealed condition is highly resistant to corrosive conditions in urban and rural environments. It is resistant to most organic acids.
ADDITIONAL PROPERTIES
FINISHES
# 1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
# 2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process.
# 2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D. #BA- Bright annealed cold rolled and bright annealed #CBA- Course bright annealed cold rolled matte finish and bright anneal
#2 - Cold Rolled
# 2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish.
2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished - Various grit finish for specific polish finished requirements. * Special finishes are available for all alloys - Contact US for more information.
Q: Would you provide samples For free?
A: Yes. with on stock specification We provide samples For Free. Freight charge collect
Q: What information should i provide to source for the right products?
A: Material grade, width, thickness, coating and Purchase quantity, Expected lead time, etc
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A: Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you
can choose other ports according to your needs.
Q: About product prices?
A: Prices vary from period to period due to cyclical changes in the price of raw materials.
Q: How long does your delivery time take?
A: In general, our delivery time is within 5-45 days, and may be delayed if the demand is extremely
large or special circumstances occur.
Q: Can I visit your location?
A: Of course, we welcome customers from all over the world to visit our factory. However, some
of the plants are not open to the public.
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A: Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed. We provide All Original Mill test certificate and support third party inspection.
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation
wooden pallet. It can effectively protect products from corrosion during ocean transportation.
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A: In general, our online service time is Beijing time: 8:00-22:00, after 22:00,
we will reply to your inquiry during the next working day.