Harbor Castings Inc. • 2508 Bailey Rd. • Cuyahoga Falls, OH 44221 • Ph: 330-499-7178 • Fax: 330-499-2018

Carbon Steel

ALLOY / SPECIFICATION ANNEALED HARDENED CHARACTERISTICS
1010 / IC 1010 50-55 Rb N/A Electrical applications
1018 / IC 1018 65-80 Rb N/A Carburizing steel for general applications
IC1020 /ASTM A732 GR. 1A 80 Rb N/A Inexpensive with wide range of applications
IC1030 /ASTM A732 GR. 2A,2Q 75 Rb 20-50Rc Hardenable / Medium strength
IC1040 /ASTM A732 GR. 3A,3Q 85 Rb 22-51 Rc Hardenable / Medium strength
1045 / IC 1045 100 Rb 25-57 Rc Hardenable / Medium strength
IC1050 /ASTM A732 GR. 4A,4Q 100 Rb 30-60 Rc Hardenable / Medium strength
1060 / IC 1060 100 Rb 33-60 Rc Hardenable / Medium strength

Alloy Steel

ALLOY / SPECIFICATION ANNEALED HARDENED CHARACTERISTICS
IC4130 /ASTM A732 GR. 7Q 100 Rb 23-49 Rc Structural applications / Good weldability
IC4140 /ASTM A732 GR. 8Q 100 Rb 29-57 Rc Good toughness / Fatigue resistance
IC4340 /ASTM A732 GR. 10Q 20 Rc 20-55 Rc High strength / Fatigue resistance
IC4620 /ASTM A732 GR. 11Q 100 Rb 20-32 Rc General application / carburizing
IC6150 /ASTM A732 GR. 12Q 100 Rb 30-60 Rc High abrasion & shock resistance
IC8620 /ASTM A732 GR. 13Q 100 Rb 20-45 Rc Carburizing used for gears, crankshafts etc.
IC8630 /ASTM A732 GR. 14Q 100 Rb 25-50 Rc Often used for machine parts
IC52100 /ASTM A732 GR. 15A 25 Rc 30-65 Rc High carbon / Good abrasion resistance
9310 / SAE 9310 100 Rb 24-43 Rc Similar to 8620 / Good core hardness

Austenitic Stainless

ALLOY / SPECIFICATION ANNEALED HARDENED CHARACTERISTICS
303 / CF16 90 Rb N/A Corrosion resistant / Good machinability
304 / CF8 90 Rb N/A Better corrosion resistance
310 / HK 90 Rb N/A Good heat resistance
316 / AMS 5360 CF8M 90 Rb N/A Very good corrosion resistance
330 / HT 90 Rb N/A Very good heat resistance /Resists thermal shock
347 / CF8C 90 Rb N/A Good corrosion resistance

Hardenable Stainless

ALLOY / SPECIFICATION ANNEALED HARDENED CHARACTERISTICS
17-4 / AMS 5355 36 Rc 34-44 Rc Corrosion resistant / Machinable
410 / CA15 100 Rb 94 Rb-45 Rc Good hardness and corrosion resistance
416 / AMS 5349 IC 416 100 Rb 94 Rb-45 Rc Better machinability than 410
420 / ASTM A743 IC 420 25 Rc 30-52 Rc Higher hardness
440C / AMS 5352 IC 440C 35 Rc 40-60 Rc Good toughness / Higher hardness

Cobalt & Nickel

ALLOY / SPECIFICATION ANNEALED HARDENED CHARACTERISTICS
Cobalt-6 / AMS 5387 – 5373 37-45 Rc (as cast) N/A Heat and corrosion resistant
Ni Alloy C / ASTM A494 90 Rb (as cast) N/A Heat and corrosion resistant

Tool Steel

ALLOY / SPECIFICATION ANNEALED HARDENED CHARACTERISTICS
A-2 / CA-2 20 Rc 47-60 Rc Medium machinability, toughness & wear resistance
D-2 / CD-2 35 Rc 50-59 Rc Very good wear resistance / Lower machinability & toughness
H-13 / CH-13 100 Rb 45-53 Rc Medium machinability & wear resistance Very good toughness
O-1 / CO-1 100 Rb 45-61 Rc Medium toughness & wear resistance Good machinability
O-2 / CO-2 100 Rb 38-60 Rc Medium toughness & wear resistance Good machinability
S-5 / CS-5 100 Rb 37-59 Rc Medium machinability / Low wear resistance Very good toughness
S-7 / CS-7 100 Rb 35-57 Rc Medium machinability / Low wear resistance Very good toughness

Non-Ferrous Alloys

ALLOY / SPECIFICATION TENSILE STRENGTH (psi) YIELD STRENGTH (psi) CHARACTERISTICS
Aluminum Alloy / A356 ASTM B26 38-48,000 28-36,000 Good castability, weldability and corrosion resistance
Tenzaloy / 713 ASTM B26 35,000 as cast Typical 26,000 as cast Typical Good strength without heat treat / Excellent machinability / ages in 21 days
Aluminum Bronze / 954 ASTM B148 75-85,000 as cast 90-105,000 H.T. 30-40,000 as cast 45-55,000 H.T. Good corrosion resistance / Heat Treatable
Silicon Bronze / 872 ASTM B763 55-65,000 22-30,000 Good corrosion resistance / Fair castability

Harbor Castings Inc. • 2508 Bailey Rd. • Cuyahoga Falls, OH 44221 • Ph: 330-499-7178 • Fax: 330-499-2018

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