Machinery's Handbook, 31st Edition
Properties of Investment Casting Alloys Mechanical Properties of Various Investment Casting Alloys Mechanical Properties of Various Investment Casting Alloys (Continued)
389
Tensile Strength (10 3 psi) 170–220 120–170 180–230 130–170
0.2% Yield Strength a (10 3 psi)
Material Condition
% Elongation
Alloy Designation
Hardness c
Carbon and Low-Alloy Steels and Iron (Continued)
IC 8665 IC 8730 IC 52100 IC 1722AS 1.2% Si Iron
Hardened Hardened Hardened Hardened
140–200 110–150 140–180 100–140
0–10 7–20 1–7 6–12 30–35 18–24 3–10 5–12 3–8 0–5 5–20 6–20 6–12 5–15 20–30 10–25 35–50 30–40 35–45 35–60 30–45 35–45 35–45 8–12 8–12 8–12 10–15 30–40 10–20 15–30 25–35 5–10 10–20 25–35 25–40 8–20 15–25 6–10 15–20 8–15 15–30 0
… …
30–65 RC 25–48 RC
…
50–60 60–80
37–43 40–50 70–80
55 RB
Ductile Iron, Ferritic Ductile Iron, Pearlitic
Annealed Normalized
143–200 BHN 243–303 BHN
100–120
Hardenable Stainless Steel
CA-15 IC 416 CA-40 IC 431 IC 17-4 Am-355 IC 15-5
Hardened Hardened Hardened Hardened Hardened Hardened Hardened Annealed Hardened Annealed Annealed Annealed Annealed Annealed Annealed
95–200 95–200 200–225 110–160 150–190 200–220 135–170 100–115 135–145 70–85 70–85 65–75 65–75 70–80 65–75 65–75 75–85 80–95 75–95 63–70 35–45 50–60 65–75 80–100 65–75 100–110 120–140 100–110
75–160 75–160 130–210 75–105 140–160 150–165 110–145 75–85 100–120 40–50 32–36 30–35 30–45 30–40 25–35 30–40 50–60 45–55 45–55 41–45 25–30 35–40 40–55 32–38 55–65 85–100 60–80 33–40 25–35 65–95 60–75 75–90 60–70 70–80 50–60
94 RB–45 RC 94 RB–45 RC 30–52 RC 20–40 RC 34–44 RC 26–38 RC 94–100 RB 28–32 RC 90 RB (max) 90 RB (max) 90 RB (max) 90 RB (max) … 90 RB (max) 90 RB (max) 90 RB (max) 90–100 RB 90–100 RB 90 RB–25 RC 85–96 RB
CD-4M Cu
Austenitic Stainless Steels
CF-3, CF-3M, CF-8, CF-8M, IC 316F Annealed
CF-8C CF-16F CF-20 CH-20 CN-7M
IC 321, CK-20
Nickel-Base Alloys
Alloy B Alloy C
Annealed As Cast Annealed AC to 24 ° C AC to 816 ° C As Cast As Cast Annealed As Cast Annealed Hardened As Cast As Cast
Alloy X b
… 12–20
…
Invar (Fe-Ni alloy) In 600 (Inconel) In 625 (Inconel)
50–60 RB 80–90 RB 10–20 RC 65–75 RB 20–28 RC 32–38 RC 20–30 RC 67–78 RB 65–85 RB 24–32 RC 20–25 RC 20–30 RC 30–36 RC 25–34 RC
Monel 410 S Monel RH Monel Monel E M-35 Monel
65–80 65–80
As Cast
Cobalt-Base Alloys
Cobalt 21 Cobalt 25 Cobalt 31 Cobalt 36
As Cast As Cast As Cast As Cast As Cast
95–130 90–120 105–130 90–105 95–110 90–100
F75
N-155 90–100 RB a For copper alloys, yield strength is determined by 0.5% extension under load or 0.2% offset method. A number in parentheses following a copper alloy indicates the UNS designation of that alloy (for example, Al Bronze C (954) identifies the alloy as UNS C95400). b AC = air cooled to temperature indicated. c Hardness value scales are: RB and RC for Rockwell B and C scales, respectively, and BHN for Brinell Hardness Numbers. Sol. Anneal Source: Investment Casting Institute. Mechanical properties are average values of separately cast test bars and are for reference only. For items marked … data are not available. Alloys identi fied by IC followed by an SAE designation number (IC 1010 steel, for example) are generally similar to the SAE material although properties and chemical composition may be different.
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