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44 Cards in this Set
 Front
 Back
4130
What is the first digit signify? 
Major Alloy, (Molybdenum)


1220
What does the second digit signify? 
Minor Alloy, (Resulfurized and rephosphorized)


1120
What does the third and fourth digit signify? 
Carbon Content, (In hundredths of a percent by weight)


What is the Major Alloy?
1xxx 
Carbon steels


What is the Major Alloy?
2xxx 
Nickel steels


What is the Major Alloy?
3xxx 
Nickelchromium steels


What is the Major Alloy?
4xxx 
Molybdenum steels


What is the Major Alloy?
5xxx 
Chromium steels


What is the Major Alloy?
6xxx 
Chromiumvanadium steels


What is the Major Alloy?
7xxx 
Tungsten steels


What is the Major Alloy?
8xxx 
Nickelchromiumvanadium steels


What is the Major Alloy?
9xxx 
Siliconmanganese steels


What is the Minor Alloy?
10XX 
Plain carbon (Mn 1.00% max)


What is the Minor Alloy?
11XX 
Resulfurized


What is the Minor Alloy?
12XX 
Resulfurized and rephosphorized


What is the Minor Alloy?
13XX 
Manganese, Mn 1.75%


What is the Minor Alloy?
14XX 
Unknown


What is the Minor Alloy?
15XX 
Plain carbon (Mn 1.00% to 1.65%)


What is the Minor Alloy?
23XX 
Nickel steels, Ni 3.50%


What is the Minor Alloy?
25XX 
Nickel steels, Ni 5.00%


What is the Minor Alloy?
31xx 
Nickelchromium steels, Ni 1.25%, Cr 0.65% or 0.80%


What is the Minor Alloy?
32xx 
Nickelchromium steels, Ni 1.25%, Cr 1.07%


What is the Minor Alloy?
33xx 
Nickelchromium steels, Ni 3.50%, Cr 1.50% or 1.57%


What is the Minor Alloy?
34xx 
Nickelchromium steels, Ni 3.00%, Cr 0.77%


What is the Minor alloy?
40xx 
plain, Mo 0.20% or 0.25% or 0.25% Mo & 0.042 S


What is the Minor alloy?
44xx 
plain, Mo 0.40% or 0.52%


What is the Minor alloy?
41xx 
Chromiummolybdenum (Chromoly) steels, Cr 0.50% or 0.80% or 0.95%, Mo 0.12% or 0.20% or 0.25% or 0.30%


What is the Minor alloy?
43xx 
Nickelchromiummolybdenum steels, Ni 1.82%, Cr 0.50% to 0.80%, Mo 0.25%


What is the Minor alloy?
43BVxx 
Nickelchromiummolybdenum steels, Ni 1.82%, Cr 0.50%, Mo 0.12% or 0.35%, V 0.03% min


What is the Minor alloy?
47xx 
Ni 1.05%, Cr 0.45%, Mo 0.20% or 0.35%


What is the Minor alloy?
46xx 
Nickelmolybdenum steels, Ni 0.85% or 1.82%, Mo 0.20% or 0.25%


What is the Minor alloy?
48xx 
Ni 3.50%, Mo 0.25%, Ni 3.50%, Mo 0.25%


What is the Minor alloy?
50xx 
Chromium steels, Cr 0.27% or 0.40% or 0.50% or 0.65%


What is the Minor alloy?
50xxx 
Chromium steels, Cr 0.50%, C 1.00% min


What is the Minor alloy?
50Bxx 
Chromium steels, Cr 0.28% or 0.50%


What is the Minor alloy?
51xx 
Chromium steels, Cr 0.80% or 0.87% or 0.92% or 1.00% or 1.05%


What is the Minor alloy?
51xxx 
Chromium steels, Cr 1.02%, C 1.00% min


What is the Minor alloy?
51Bxx 
Chromium steels, Cr 0.80%


What is the Minor alloy?
52xxx 
Chromium steels, Cr 1.45%, C 1.00% min


What is the Minor alloy?
61xx 
Chromiumvanadium steels, Cr 0.60% or 0.80% or 0.95%, V 0.10% or 0.15% min


What is the Minor alloy?
72xx 
Tungstenchromium steels, W 1.75%, Cr 0.75%


What is the Minor alloy?
81xx 
Nickelchromiummolybdenum steels, Ni 0.30%, Cr 0.40%, Mo 0.12%


What is the Minor alloy?
81Bxx 
Nickelchromiummolybdenum steels, Ni 0.30%, Cr 0.45%, Mo 0.12%


What is the Minor alloy?
86xx 
Nickelchromiummolybdenum steels, Ni 0.55%, Cr 0.50%, Mo 0.20%
