C21000 Gilding, 95%

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Overview

Alloy C21000 is a yellow brass. With a small zinc addition, the alloy is stronger and more durable than pure copper, while exhibiting excellent formability, corrosion resistance, and solderability amongst the brasses. C21000 finds use in applications from connector components to fasteners.

Physical Properties

Annealing Range (Min) 800 °F
Annealing Range (Max) 1450 °F
Density 0.32 lb/in³
Electrical Resistivity (Annealed) 18.5 Ω·cir-mil/ft @ 68 °F
Electrical Conductivity (Annealed) 56% IACS @ 68 °F
Thermal Conductivity 135 Btu/ft²/ft·hr/°F @ 68 °F
Coefficient of Thermal Expansion 10 per °F (68-572 °F)
Modulus of Elasticity (Tension) 17 ksi
Modulus of Rigidity (Tension) 6 ksi
Melting Point (Solidus) 1,620 °F
Melting Point (Liquidus) 1,880 °F
Annealing Range (Min) 427 °C
Annealing Range (Max) 788 °C
Density 8.94 gm/cm³
Electrical Resistivity (Annealed) 3.08 µΩ·cm @ 20 °C
Electrical Conductivity (Annealed) 0.33 MS·cm @ 20 °C
Thermal Conductivity 234 W/m·K @ 20 °C
Coefficient of Thermal Expansion 18 per °C (20-300 °C)
Modulus of Elasticity (Tension) 117 Mpa
Modulus of Rigidity (Tension) 44 Mpa
Melting Point (Solidus) 882 °C
Melting Point (Liquidus) 1,027 °C

Round Wire

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
MILL LIMITS
(inch)
Min Max
1/8 Hard H00 35.0 45.0 .0010 - .1285 inch
1/4 Hard H01 41.0 51.0
1/2 Hard H02 49.0 58.0
3/4 Hard H03 57.0 64.0
Hard H04 61.0 68.0
Extra Hard H06 66.0 73.0
Spring H08 72.0  
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
MILL LIMITS
(mm)
Min Max
1/8 Hard H00 240 320 .0254 - 3.264 mm
1/4 Hard H01 280 360
1/2 Hard H02 330 400
3/4 Hard H03 390 450
Hard H04 420 470
Extra Hard H06 450 510
Spring H08 490  

Square Wire

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
MILL LIMITS
(inch)
Min Max
1/8 Hard H00 35.0 45.0 .0100 - .0808 inch 
1/4 Hard H01 41.0 51.0
1/2 Hard H02 49.0 58.0
3/4 Hard H03 57.0 64.0
Hard H04 61.0 68.0
Extra Hard H06 66.0 73.0
Spring H08 72.0  
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
MILL LIMITS
(mm)
Min Max
1/8 Hard H00 240 320 .2540 - 1.905 mm
1/4 Hard H01 280 360
1/2 Hard H02 330 400
3/4 Hard H03 390 450
Hard H04 420 470
Extra Hard H06 450 510
Spring H08 490  

Rolled Flat

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
MILL LIMITS
(inch)
Min Max
1/4 Hard H01 37.0 47.0 Thickness:
.0100 - .0500 inch

Width:
.0150 - .2500 inch
1/2 Hard H02 42.0 52.0
3/4 Hard H03 46.0 56.0
Hard H04 50.0 59.0
Extra Hard H06 56.0 64.0
Spring H08 60.0 68.0
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
MILL LIMITS
(mm)
Min Max
1/4 Hard H01 250 330 Thickness:
.2540 - 1.905 mm

Width:
.3810 - 6.350 mm
1/2 Hard H02 280 360
3/4 Hard H03 310 390
Hard H04 340 410
Extra Hard H06 380 450
Spring H08 410 470
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