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Flashcards in Metal Stainless Steel Deck (20)
1

chromium-oxide film provides:

corrosion resistance

2

if chromium-oxide film is scratched,

reforms as exposed to air.

3

stainless steel labeled by:

AISI (American Iron and Steel Institute)

4

Type 302:

traditionally most widely used.

5

Type 304:

largely replaced 302 bc of improved weldability.

6

Type 301:

advantage is improved high tensile strengths.
sim 302, smaller amounts chromium/nickel.

7

Type 316:

for extreme corrosive environments,
(marine/industrial plants)
higher % nickel, includes molybdenum.

8

Type 430:

no nickel. less corrosion resistant. int only.

9

stainless steel finishes:
No. 3:

intermediate, dull. coarse > #4.

10

stainless steel finishes:
No. 4:

gen-purpose polished, dull.
no mirror reflection.
frequent use.

11

stainless steel finishes:
No. 6:

dull satin.

12

stainless steel finishes:
No. 7:

reflective polished.

13

stainless steel finishes:
No. 8:

most reflective. mirrors/reflectors.
seldom gen apps.

14

stainless steel finishes:
organic coatings:

acrylic/plastic based enamels, fairly elastic.

15

stainless steel finishes:
inorganic coatings:

porcelain enamel, less elastic, add color.

16

steels designated by ASTM

alloy steels

17

ASTM A36:

most common type of structural steel
min yield point 36,000lb/in^2
carbon content 0.25-0.29%

18

ASTM A440:

high-strength for bolted/riveted structures

19

ASTM A441:

high-strength,
low alloy manganese vanadium steel,
for welded construction.

20

weathering steel:

contains small amounts of copper,
develops protective oxide coating,
sepia finish.
detailed so runoff does not stain other materials.