ThePipingMart Blog Grades C936 Alloy, High-Leaded Tin Bronze (C93600)- Composition, Properties and Uses

C936 Alloy, High-Leaded Tin Bronze (C93600)- Composition, Properties and Uses

Bronze 936

C93600 is a heat-treatable alloy with many different properties and uses. It is widely used in manufacturing parts for the aerospace and automotive industries due to its high strength, corrosion resistance, and good machinability. This blog post will explore the composition, chemical properties, mechanical properties, physical properties, uses, corrosion resistance, heat resistance, heat treatment methods, machining techniques and welding processes related to Bronze 936.

Bronze 936 Composition

Bronze 936 consists primarily of copper (90%), nickel (5%), iron (3%), phosphorus (0.2%) and manganese (1%). Its unique combination of metals makes it a highly durable material with excellent mechanical properties.

Cu% Pb% Sn% Zn% Fe% P% Ni%1 Al% S% Sb% Si%
1.00 0.20 1.50 1.00 0.005 0.08 0.55 0.005

Bronze 936 Chemical Properties

The presence of nickel gives the bronze an increased resistance to corrosion. It also provides greater tensile strength than other alloys. The phosphorous content improves weldability and hardness, while the iron helps increase its wear resistance.

Bronze 936 Mechanical Properties

Its composition determines the mechanical properties of 936 Bronze. It has a high tensile strength of 550 MPa and an elongation rate of 20%. It has excellent fatigue strength and impact strength at low temperatures, making it ideal for use in industrial applications like aerospace components or automotive parts where it must resist extreme conditions such as vibrations or shocks from impacts.

Tensile Strength, min Yield Strength, at 0.5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Brinell Hardness (500 kg load) Remarks
ksi MPa ksi MPa % typical BHN
33 227 20 138 10 65

Bronze 936 Physical Properties

The physical properties of alloy 936 include its density (8.85 g/cm3), thermal conductivity (35 W/m-K), electrical conductivity (18 %IACS) and specific heat capacity (0.386 J/g-K). It also has a melting point range between 1020 – 1030 °C depending on the exact alloy composition, which makes it suitable for casting into complex shapes or intricate components with tight tolerances required for precision engineering applications.

Melting Point – Liquidus 1720 °F 938 °C
Melting Point – Solidus 1550 °F 843 °C
Density 0.325 lb/in3 at 68 °F 9 gm/cm3 at 20 °C
Specific Gravity 9 9
Electrical Conductivity 11% IACS at 68 °F 0.064 MegaSiemens/cm at 20 °C
Thermal Conductivity 28.5 Btu/sq ft/ft hr/°F at 68 °F 49.36 W/m at 20 °C
Coefficient of Thermal Expansion 68-392 10.3 · 10-6 per °F (68-392 °F) 17.8 · 10-6 per °C (20-200 °C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of Elasticity in Tension 14000 ksi 96516 MPa

Bronze 936 Equivalent

CDA ASTM SAE AMS Federal Military Other
C93600 B505

Bronze 936 Thermal Properties

Treatment Value* Time**
Stress Relief 500
Solution Treatment 0

Bronze 936 Uses

Due to its combination of useful physical and mechanical characteristics, bronze 936 is widely used in many industries, including aerospace parts manufacturing, where it can be used for turbine engine components due to its ability to withstand high temperatures without losing strength or becoming brittle; automotive parts manufacturing due to its wear resistance; shipbuilding where it can be used for propellers; electrical engineering where it can be used for switchgear components; general engineering where it can be used for fasteners because of its high tensile strength; medical implants because it is non-reactive in contact with body fluids; valves due to its corrosion resistant properties; food industry because it is non-toxic; marine applications such as propellers because of its wear-resistant qualities; decorative items due to its attractive golden colour when polished etc.

Corrosion Resistance

The presence of nickel gives bronze 936 excellent corrosion-resistant qualities making it suitable for use in environments exposed to salt water or other corrosive elements like acids.

Heat Resistance

The addition of iron gives bronze 936 increased heat-resistant qualities compared with pure copper alloys making it suitable for use in applications like turbines that require materials capable of withstanding very high temperatures without losing their strength or becoming brittle over time.

Heat Treatment

Bronzes like bronze 936 require careful attention during any heat treatment process to prevent them from becoming brittle or warped due to uneven cooling rates, which could make them unusable even if they meet their specified mechanical requirements after the treatment process has been completed successfully.


Due to the presence of iron within the alloy’s composition, bronze 936 reacts differently compared with pure copper alloys when being machined, which means that special tools must be used when cutting or shaping components made from this particular grade – this includes using higher cutting speeds than would normally be used on softer metals such as aluminium or pure copper alloys etc.


Bronze 936 can be easily welded using gas metal arc welding techniques since no unusual metallurgical considerations are involved. However, some precautions should still be taken when welding this particular grade, such as preheating before welding so that distortions caused by thermal expansion during cooling are minimized etc.


To sum up this blog post on why you should consider using Bronze 936 for your next project – not only does this grade offer excellent mechanical & physical characteristics but also superior corrosion & heat resistance along with good machinability & weldability, meaning that you will have no trouble finding practical uses for this versatile alloy! Additionally, certain measures must be taken during both the machining & welding processes to ensure optimal results each time! Finally – one thing’s certain – when looking for reliable materials capable of performing under extreme conditions, look no further than bronze936!


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