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China manufacturer for SUP9 Spring Steel flat bar/shaped bars| 55CrMnA | 55Cr3 | 1.7176 | 527A60 | 55C3

Applications

SUP9 steels bars, Highlight the advantage is good hardenability, hot working performance, comprehensive mechanical properties,

Decarburization resistance is also a good big cross-section of various important springs, such as automobiles, locomotives, large plate springs, springs, etc. SUP9 Spring main used for heavy vehicles, tractors, industrial production load, stress, and the diameter of the larger plate spring and helical spring

car spring steel

Regular size and Tolerance

Chemical composition:

C(％)0.52-0.60Si(％)0.15-0.35Mn(％)0.65-0.95P(％)≤0.030
S(％)≤0.035 Cr(％)0.65-0.95

Equivalent Of SUP9 alloy Spring Steel

USAGermanyChinaJapanFranceEnglandItalyPolandISOAustriaSwedenSpain
–DIN, WNrGBJISAFNORBSUNIPNISOONORMSSUNE

5155 / G51550

55Cr3 / 1.7176
55CrMnA
SUP9
55C3
≈527A60 		//
55Cr3 		///

Mechanical property:

The mechanical properties of SUP9 Spring Steels are outlined in the following table.

Tensile strengthConditions to yield strengthElongationReduction of areaHardness (Hot Rolled)Hardness (Cold Drawn)
σb (MPa)：≥1225(125)σ0.2 (MPa)：≥1080(110)δ5 (%)：≥9ψ (%)：≥20≤321HB;

Cooperation partner:

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Good quality Motorcycle crankshafts from a Chinese manufacturer

Motorcycle crankshaft：

The working principle of the motorcycle crankshaft

The crankshaft of a motorcycle is a component that ignites the gasoline in the engine. The gasoline combustion work drives the live race down, and then drives the crankshaft to rotate. It also depends on the inertia of the crankshaft to maintain operation when it is not ignited. As long as the engine is started, the crankshaft will continue to rotate, and drive the magneto to generate electricity, charge the battery and use it for power devices in the car. If the gear does not go, it means pinch-clutch (hand-clutched models) or idling (auto-clutch models such as pedals or curved beams). At this time, the crankshaft is still rotating. Bending beam or pedal) the car will not go, the resistance of the engine is slightly increased, but the effect is very small, and the engine speed in neutral is the same.

The motorcycle crankshaft is one of the most important parts in the internal combustion engine. It connects the piston, connecting rod and camshaft. Its main function is to convert the reciprocating motion of the piston into the rotational motion of the output shaft, thereby driving the operation of the motorcycle.

The crankshaft consists of multiple cranks, each of which is connected to a piston and a connecting rod. When the piston moves up and down in the cylinder, the connecting rod drives the crank to rotate, and finally converts the reciprocating motion of the piston into the rotational motion of the output shaft. This motion conversion method allows the motorcycle to run smoothly and provides enough power to drive the vehicle.

The design and manufacture of the crankshaft need to take into account many factors, such as strength, weight, thermal expansion coefficient, noise and fuel consumption. Modern motorcycle manufacturers usually use high-performance alloy materials to manufacture crankshafts to improve their performance and durability.