C37000 (Free-Cutting Muntz Metal) Last Update: Dec 31, 2003
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" N5 {" M/ q& j% Y- N' Z1 P" B+ QChemical Composition! \0 ?5 B' O9 H/ `
(%max., unless shown as range or min.)CuFePbZnMin./Max.59.0-62.0.15.8-1.5Rem.Nominal60.0-1.039.0Note: Cu + Sum of Named Elements, 99.6% min. 7 P; d8 i% [. s2 N
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2 g/ v, ~# a/ Q# k6 K [7 DApplicable SpecificationsProductSpecificationTubeASTM B1350 G7 v% \* O- u7 r" D
MILITARY MIL-T-46072
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Fabrication PropertiesJoining TechniqueSuitabilitySolderingExcellentBrazingGoodOxyacetylene WeldingNot Recommended Gas Shielded Arc WeldingNot Recommended Coated Metal Arc WeldingNot Recommended Spot WeldNot Recommended Seam WeldNot Recommended Butt WeldFairCapacity for Being Cold WorkedFairCapacity for Being Hot FormedExcellentMachinability Rating705 A0 H/ F6 _% D* ~* h- Q
Mechanical Properties (measured at room temperature, 68 F (20 C)TemperSection b2 \# V0 O1 C! h
SizeCold
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1 J" t' J% j& x `7 BStrengthYield: n9 v, q7 D& ~- B, p
Strength6 S: R2 ~4 g) N
(0.5% ext.
' q. l- d( @. f5 R% A" I# ~8 Y5 {under load)Yield; e) q" Z+ p% ~8 B e; t( F
Strength
S% a& m8 n8 H(0.2%2 U' B7 I* E8 n2 q; D! w6 G- V
offset)Yield; u# j, c' l6 ]5 F' W, m
Strength
2 i- L; u7 H/ i' y" V% G(0.05%
' g8 w7 q8 \) roffset)ElRockwell
8 D. d& d1 W0 FHardnessVickens2 h" q0 y+ R+ ?- @) P; U' U
Hard.Brinell& V( u& V5 K1 `4 A0 d" B, E" [
Hard.Shear8 R- ^- e% h/ M |' E& ?# M0 |! ]
StrengthFatigue
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Strength5 m9 B5 a6 F* w$ Z* K" K
in.%
& T, N: A2 R5 p, H. f2 e) jFksiksiksiksi%BCF30T5005003000ksiksift-lb
3 C: P' a+ W/ X Q7 ` _mm.$ l7 I9 B7 q; o; B$ F' U' W( P
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CMPaMPaMPaMPa! S- b2 j* ~; }6 T' S
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MPaMPaJTubeH040.035TYP688060--685--74-----0.08 T5 Z+ ]6 H' c
0.0- }, B+ ~9 W/ C/ K3 f( U- ?
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20552414--685--74-----0.0H800.025TYP687045--1075--67-----0.0
2 ]) k0 r3 S3 p" z+ R; W0.0
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3 [2 d$ t4 @# A4 X" U4 ]20483310--1075--67-----0.0O500.00TYP685420--40--8043-----0.00 C* k* S2 }: S! e% p
0.0
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! H, o5 y4 t& p2 C20372138--40--8043-----0.0*Fatigue Strength: 100 x 10 6cycles,
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! @& G( h. p) D* ?3 j8 hPhysical PropertiesUS CustomaryMetricMelting Point - Liquidus1650 F899 CMelting Point - Solidus1630 F888 CDensity0.304 lb/in3 at 68 F8.41 gm/cm3 @ 20 CSpecific Gravity8.418.41Electrical Resistivity38.4 ohms-cmil/ft @ 68 F6.38 microhm-cm @ 20 CElectrical Conductivity27 %IACS @ 68 F0.158 MegaSiemens/cm @ 20 CThermal Conductivity69.0 Btu · ft/(hr · ft2·oF)at 68F119.4 W/m · oK at 20 CCoefficient of Thermal Expansion11.6 ·10-6 per oF (68-572 F)20.9 ·10-6 per oC (20-300 C)Specific Heat Capacity0.09 Btu/lb/oF at 68 F377.1 J/kg · oK at 293 KModulas of Elasticity in Tension15000 ksi103400 MPaModulus of Rigidity5600 ksi38610 MPa | 
发表于 2007-5-15 21:22:49