Smithells Light Metals Handbook Episode 4 doc

3.3 Mechanical properties of titanium and titanium alloys Table 3.15 PURE TITANIUM, TYPICAL MECHANICAL PROPERTIES AT ROOM TEMPERATURE Elongation % Red.. Mechanical properties of light me

3.3 Mechanical properties of titanium and titanium alloys

Table 3.15 PURE TITANIUM, TYPICAL MECHANICAL PROPERTIES AT ROOM TEMPERATURE

Elongation % Red Specification bend radius

ŁIMI Nomenclature †Up to 16.3 mm

Table 3.16 TITANIUM ALLOYS TYPICAL MECHANICAL PROPERTIES AT ROOM TEMPERATURE

continued overleaf

ŁIMI Nomenclature

58 Smithells Light Metals Handbook

TEMPERATURE

0.2% Tensile Elongation Mod of Transformation Temperature proof stress strength on 50 mm elasticity temperature DesignationŁ °C MPa MPa % GPa °C

ŁIMI nomenclature

Mechanical

Table 3.18 (continued )

Mechanical

62 Smithells Light Metals Handbook

Stress MPa to produce 0.1% plastic strain in IMI Temperature

designation °C 1000 h 10 000 h 100 000 h

Nominal Stress MPa to produce 0.1% total plastic strain in IMI composition Temperature

designation % Condition °C 100 h 300 h 500 h 1000 h

Mechanical properties of light metals and alloys 63

Table 3.20 (continued )

Nominal Stress MPa to produce 0.1% total plastic strain in IMI composition Temperature

designation % Condition °C 100 h 300 h 500 h 1000 h

Endurance limit Nominal Tempera- Tensile for 107cycles

IMI composition ture strength Details of stated) designation % Condition °C MPa test MPa

Rotating bend

Rotating bend

Rotating bend

Direct stress (Zero mean)

continued overleaf

64 Smithells Light Metals Handbook

Table 3.21 (continued )

Endurance limit Nominal Tempera- Tensile for 107cycles

IMI composition ture strength Details of stated) designation % Condition °C MPa test MPa

Direct stress (Zero mean)

purity

Direct stress (Zero minimum)

Rotating bend

Direct stress (Zero mean)

Rotating bend

Direct stress (Zero mean)

IMI 115

IMI 125

Direct stress (Zero mean)

Rotating bend

Direct stress (Zero minimum)

Direct stress (Zero minimum)

Rotating bend Rotating bend

Rotating bend

Mechanical properties of light metals and alloys 65

Table 3.21 (continued )

Endurance limit Nominal Tempera- Tensile for 107cycles

IMI composition ture strength Details of stated) designation % Condition °C MPa test MPa

Rotating bend

Direct stress (Zero

rod

Direct stress (Zero mean)

Direct stress (Zero minimum)

Direct stress (Zero minimum)

Direct stress (Zero minimum)

Direct stress (Zero minimum)

ŁLimits for 108cycles

66 Smithells Light Metals Handbook

Nominal Izod value Joules (ft lbf)Ł

IMI composition

designation % Condition 196°C 78°C 20°C 100°C 200°C 300°C 400°C 500°C

Nominal Charpy value Joules (ft lbf)

IMI composition

designation % Condition 196°C 78°C 20°C 100°C 200°C 300°C 400°C 500°C

ŁBSS 131 (1) 0.45 in diameter straight notched test pieces †Izod values of commercial purity titanium are appreciably affected by variation in hydrogen content within commercial limits (0.008% maximum) in Ti 130 rod

4 Aluminium and magnesium casting alloys

4.1 Aluminium casting alloys

Table 4.1 ALUMINIUM-SILICON ALLOYS

Specification BS 1490: 1988 LM6M(Ge)

Other

Properties of material

Suitability for:

Water,

Stabilization time, h

castings, readily welded

Mechanical properties sand cast SI units (Imperial units in brackets)

HB 100 150

Mechanical properties chill cast SI units (Imperial units in brackets)

HB 100 150

†If Ti alone is used for grain refinement then Ti 6< 0.05% Association of Light Alloy Refiners and Smelters Grading:

§Refine with phosphorus subject to examination under microscope (Ge General purpose alloy; SP special purpose alloy as per BS 1490:1988)

ŁŁOr for such time to give required BHN

Table 4.1 (continued )

Specification BS 1490: 1988

0.5, P§

Properties of material

Suitability for:

requirement

Piston alloy

Mechanical properties sand cast SI units (Imperial units in brackets)

Tensile stress min., MPa

(7.8 9.7)

80 110 (5.2 6.5)

200 250 (12.9 16.2)

Mechanical properties chill cast SI units (Imperial units in brackets)

Tensile stress min., MPa

130-200(8.4 12.9)

(14.2 16.8)

(11.0 12.3)

†If Ti alone is used for grain refinement then Ti 6< 0.05% E Excellent F Fair G Good P Poor U Unsuitable

‡Fully heat-treated (Ge General purpose alloy; SP Special purpose alloy as per BS: 1490: 1988)

§Refine with phosphorus-subject to examination under microscope

ŁŁOr for such time to give required BHN

72 Smithells Light Metals Handbook

LM16TF

Specification BS 1490; 1988 LM4MTF LM16TB (SP)

Related British Specifications LM2M(Ge) LM4M(Ge) (Ge) (SP) 3L78 LM21M(SP)

Composition % (Single figures indicate maximum) | {z } | {z }

Properties of material

Suitability for:

Heat treatment

Special properties Alloy for General engineering alloy Pressure tight High Equally

Mechanical properties sand cast SI units (Imperial units in brackets)

Tensile stress min MPa

Expected 0.2% proof stress,

Mechanical properties chill cast SI units (Imperial units in brackets)

Tensile strength min MPa

Expected 0.2% proof stress,

Ł0.05% min if Ti alone used for grain refinement

†Not normally used in this form

‡The use of die castings is usually restricted to only moderately elevated temperatures

Aluminium and magnesium casting alloys 73

Table 4.2 (continued )

Specification BS 1490: 1988 LM22TB LM24M LM26TE LM27M LM30M LM30TS

Related British Specifications (SP) (Ge) (SP) (Ge) (SP) (SP)

Composition % (Single figures indicate maximum) | {z }

Properties of material

Suitability for:

Heat treatment

Special properties Chill casting Alloy for Piston alloy, Excellent Alloy for pressure die

and hardness at elevated temps

Mechanical properties sand cast SI units (Imperial units in brackets)

Tensile stress min., MPa

Expected 0.2% proof stress,

(5.2 5.8)

Mechanical properties chill cast SI units (Imperial units in brackets)

HB D 90 120 Tensile strength min., MPa

Expected 0.2% proof stress,

Note:

E Excellent F Fair G Good P Poor U Unsuitable

(Ge General purpose alloy; Sp-Special purpose alloy as per BS 1490;1988)

Table 4.3 ALUMINIUM-COPPER ALLOYS

Aerospace

Composition % (Single figures indicate maximum)

0.05 0.30

Nb 0.05 0.3

Properties of material

Suitability for: