Steel-N.com Product Development

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1. Product Characteristics

This is a ferritic series stainless steel with high level of Cr and Mo. Since it has a smaller thermal expansion coefficient than austenitic series steel, it is suitable for roofing materials. Furthermore, it is a highly anti-corrosive STS product that can be used as exterior finish material without any surface treatment (Superior to STS316 but inferior to POS446M steel).

2. Product Status

Product	Standard	Usage	Available Sizes
STS CR Coil/Skelp/Sheet	POS445M	- Roofing and exterior finishing materials for buildings in coastal or industrial areas - Advanced electric water heater	Thickness: 0.4~1.2 mm Width : 40~1219 mm

3. Properties

Classification	Mechanical Properties				Physical Properties
Classification	Yield Strength (MPA)	Tensile Strength (MPA)	Elongation (%)	Hardness (HV)	Modulus of Elasticity (Gpa)	Density (g/cm³)	Thermal Expansion Coefficient	Thermal Conductivity	Specific Heat (J/g·°C)
POS445M	≥245	≥410	≥20	≥230	200	7.75	10x10^-6	22.5	0.5
STS316	≥205	≥520	≥40	≥200	198	7.98	16x10^-6	16.25	0.5