Machinery's Handbook, 31st Edition
388
Properties of Investment Casting Alloys Mechanical Properties of Various Investment Casting Alloys
Tensile Strength (10 3 psi)
0.2% Yield Strength a (10 3 psi)
Material Condition
% Elongation
Alloy Designation
Hardness c
Aluminum
356 A356 A357
As Cast As Cast As Cast As Cast As Cast As Cast As Cast As Cast As Cast
32–40 38–40 33–50 35–50 34–40 47–55 32–45 35–55 56–60
22–30 28–36 27–40 28–39 25–32 36–45 24–38 25–45 48–55 30–40 45–55 40–50 60–70 25–40 60–70 18–30 11–20 14–25 18 40–45 90–130 40–140 50–55 32 …
3–7 3–10 3–9 1–8 4–8 2–5 1.5–5 2–5 3–5 10–20 6–10 6–10 16–24 8–16 5–8 20–35 15–25 20–30 4–50 15–20 24 3–8 1–15 18–23 20
… … … … … … … … …
355, C355 D712 (40E)
A354 RR-350
Precedent 71
KO-1
Copper-Base Alloys a
Al Bronze C (954)
As Cast
75–85 90–105 90–100 110–120 65–75 110–120
80–85 RB 91–96 RB 91–96 RB 93–98 RB 60–65 RB 95–100 RB
Heat Treated
Al Bronze D (955)
As Cast
Heat Treated
Manganese Bronze, A Manganese Bronze, C Silicon Bronze
… … … … … … … …
45
…
Tin Bronze
40–50 30–50 30–40
40–50 RB
Leaded Yellow Brass (854)
…
Red Brass Silicon Brass Pure Copper
30–35 RB
70
…
20–30 45–50 90–100 70–155 70–80 110–160 80–90 33–50 50–60 60–70 65–75 85–150 70–80 90–150 80–90 100–180 90–110 125–180 100–120 120–200 110–150 130–180 130–200 130–170 130–200 140–200 130–190 130–200 110–150 140–200 100–130 120–170 130–200
35–42 RB 50–55 RB 90–95 RB
Beryllium Cu 10C (820)
As Cast Hardened As Cast Hardened As Cast …
Beryllium Cu 165C (824) Beryllium Cu 20C (825)
60 RB–38 RC 75–80 RB 25–44 RC 80–85 RB 70–78 RB
…
1–4
Beryllium Cu 275C (828)
… 15–20
Chrome Copper
…
20–40
20–30
Carbon and Low-Alloy Steels and Iron
IC 1010 IC 1020 IC 1030
Annealed Annealed Annealed Hardened Annealed Hardened Annealed Hardened Annealed Hardened Annealed Hardened Annealed Hardened Hardened Hardened Hardened Hardened Hardened Hardened Hardened Hardened Hardened Hardened Hardened
30–35 40–45 45–50 60–150 45–55 85–150 50–60 90–180 50–65 100–180 55–70 100–180 70–80 130–180 110–180 100–130 100–155 120–180 100–175 100–180 90–130 120–180 80–110 100–130 100–180
30–35 25–40 20–30 0–15 20–30 0–15 20–25 0–10 20–25 0–10 5–10 12–20 0–3 5–10 5–20 5–20 5–10 5–20 5–20 10–20 5–10 10–20 7–20 5–20 0–3
50–55 RB
80 RB 75 RB
20–50 RC
IC 1035
80 RB
25–52 RC 100 RB 25–57 RC 100 RB 30–60 RC
IC 1045
IC 1050
IC 1060
25 RC
30–60 RC
IC 1090
30 RC
37–50 RC 30–58 RC 23–49 RC 29–57 RC 25–58 RC 25–48 RC 20–55 RC 20–32 RC 30–60 RC 20–45 RC 25–50 RC 30–60 RC
IC 2345 IC 4130 IC 4140 IC 4150 IC 4330 IC 4340 IC 4620 IC 8620 IC 8630 IC 8640
IC 6150, IC 8740
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