C37000 (Free-Cutting Muntz Metal) Last Update: Dec 31, 2003
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4 y: n. C, K1 }0 dChemical Composition) @) O) {$ W" h$ |9 t4 J+ z4 \
(%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. 2 q2 d4 b1 t7 R9 S& P( q* c: [
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Applicable SpecificationsProductSpecificationTubeASTM B135
! H- d6 W) q+ z4 m2 k E& fMILITARY MIL-T-46072! U8 E$ A7 {) |9 u
Common Fabrication ProcessesMachining % b& @% x) W% I5 C7 V9 j- t" c$ o
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 Rating70
8 ]3 |7 _6 {0 b; V! oMechanical Properties (measured at room temperature, 68 F (20 C)TemperSection
: W' ]# d) z/ `/ Y# l2 w! kSizeCold% ~& ?* |/ Y9 O" V# S2 k
WorkTyp/( N. b6 w0 f( l" N% o, E1 ?
MinTempTensile
+ z. f. b& n0 I/ B1 p, r) EStrengthYield
2 L- u4 ]; m4 c: e$ bStrength
" U" r$ J3 S: w' Y/ z+ e* Q, o(0.5% ext.4 k; R0 j" G: Q/ y
under load)Yield9 e( \$ G# I- U. J! n* @
Strength
. V8 e2 J& ] d) E6 n" n(0.2%# O$ u6 Q2 G3 F, t
offset)Yield0 I- H* @1 I3 s" m
Strength
9 E0 Q- Z0 Y5 ]% V, ?(0.05%# [2 B8 O+ {# P+ T
offset)ElRockwell1 C/ Q+ f( O2 I O) u9 I
HardnessVickens
% u8 s5 K, z: T! T( V3 a7 i+ EHard.Brinell
8 e E R8 l9 L6 m$ s" k9 g3 ZHard.Shear
2 O# ?% L% {; Y6 }8 }1 ^# FStrengthFatigue$ } A/ u. Y1 B
Strength*Izod
% q; b8 n; J/ LImpact
: A7 t$ Q& j; t% S5 LStrength: i8 b* L" t: L, m% i
in.%
$ h3 t: P6 K: K8 |3 H3 H+ OFksiksiksiksi%BCF30T5005003000ksiksift-lb
* w* E0 x: V3 h6 v* }' U, n' xmm.
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CMPaMPaMPaMPa
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/ O1 I9 a" Q2 A9 B J" TMPaMPaJTubeH040.035TYP688060--685--74-----0.0
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( ?8 x8 W' ^$ A- W W20552414--685--74-----0.0H800.025TYP687045--1075--67-----0.0
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1 V1 b/ N7 {! w5 U' I20483310--1075--67-----0.0O500.00TYP685420--40--8043-----0.0
, h( v0 H$ g5 s1 @( r9 o0.04 ~; n. g+ F4 w) |* n
2 x7 S* i6 e( H! T9 o. `20372138--40--8043-----0.0*Fatigue Strength: 100 x 10 6cycles,
/ F) P. h" m) ^; H$ b) Yunless indicated as [N]X 106. 4 z6 m7 V6 A0 ^+ I' F6 o" r
Physical 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