Radiator Tube Material

Alloy Grade Thickness(mm) Temper Remark Application
4343/3003/7072 0.27-0.35 H14 Common tube material High frequency welded tube
4343/3005MOD/7072 0.25-0.3 H24 High strength longlife tube material High frequency welded tube
4343/3003/7072 0.2-0.35 H14 Common tube material B tube
4343/3003+0.5%CU/7072 0.25-0.32 H24 Moderate strength tube material B tube
4045/3105mod/7072 0.22-0.3 H14 Moderate strength tube material B tube
4045/3105mod/7072 0.2-0.23 H24 Moderate strength tube material B tube

Mechanical properties of tube material

Alloy Grade Temper Pre-braze strength Pre-braze strength Post-braze strength Post-braze strength
Tensile strength(Mpa) Yield strength(Mpa) Tensile strength(Mpa) Yield strength(Mpa)
4343/3003/7072 H14 140-185 ≥125 115 40
4343/3005MOD/7072 H24 185-235 ≥150 145 55
4343/3003+0.5%CU/7072 H24 140-185 ≥125 140 45
4045/3105mod/7072 H14 140-185 ≥125 125 45
4045/3105mod/7072 H24 150-240 ≥125 125 45

Tube material’s corrosion potential (SCE): MV

Alloy Grade Core Alloy Anti-corrosive Layer Potential Difference
4343/3003/7072 -720 -800 60
4343/3005MOD/7072 -690 -800 110
4343/3003+0.5%CU/7072 -690 -800 110
4045/3105mod/7072 -715 -800 85
4045/3105mod/7072 -715 -800 85

*As per ASTMG69, under room temperature

Radiator Header Plate Material

Alloy Grade Thickness(mm) Temper Remark
4343/3003/7072 1.0-3.0 O Common HP material
4343/3003+0.5%CU/7072 1.0-3.0 O Moderate strength HP material
4343/3003+0.5%CU/5005 1.0-3.0 O Moderate strength HP material
4343/3003+0.6%CU/7072 1.0-3.0 H24 High strength HP material
4343/3003mod/7072 1.0-3.0 H14 High-strength,long-life HP material

Mechanical properties of HP material

Alloy Grade Temper Pre-braze strength Pre-braze strength Post-braze strength Post-braze strength
Tensile strength(Mpa) Yield strength(Mpa) Tensile strength(Mpa) Yield strength(Mpa)
4343/3003/7072 O 95-135 ≥35 110 40
4343/3003+0.5%CU/7072 O 120-150 ≥45 135 45
4343/3003+0.5%CU/5005 O 120-150 ≥45 135 45
4343/3003+0.6%CU/7072 O 130-160 ≥45 140 50
4343/3003mod/7072 O 130-160 ≥45 155 60

Radiator Unclad Fin Material

Alloy Grade Thickness(mm) Temper Remark
3003 0.05-0.20 H14 Common Fin
3003+1%Zn 0.05-0.20 H16 Corrosion-resistant fin
3003+1.5%Zn 0.05-0.20 H16 Corrosion-resistant fin
3003+1.5%Zn+Zr 0.05-0.20 H16 Corrosion-resistant,anti-sagging fin(Recommended)

Strength and Electrical Potential of Fin Material

Alloy Grade Temper Pre-braze strength Pre-braze strength Post-braze strength Post-braze strength Electrical Potential(SCE)/mv
Tensile strength(Mpa) Yield strength(Mpa) Tensile strength(Mpa) Yield strength(Mpa)
3003 H14 140-185 ≥125 110 40 -720
3003+1%Zn H16 185-225 ≥160 110 40 -740
3003+1.5%Zn H16 185-225 ≥160 110 40 -770
3003+1.5%Zn+Zr H16 185-225 ≥160 130 50 -800

*As per ASTMG69, under room temperature