I. Basic Material

Item	Technical Parameters
Material Grade	430
Chinese National Standard Grade	10Cr17
UNS Grade	S43000
DIN Grade	1.4016

II. Chemical Composition (Mass Fraction wt%)

C	Si	Mn	P	S	Cr
≤0.12	≤1.00	≤1.00	≤0.040	≤0.030	16.00～18.00

III. Mechanical Properties

Item	Mechanical Properties
Tensile Strength Rm	≥450 MPa
Yield Strength Rp0.2	≥205 MPa
Elongation after Fracture A	≥22%
Brinell Hardness	≤183 HB

IV. Dimensional Tolerance Specifications

Item	Technical Requirements
Common Diameter Range	φ3.0mm ～ φ300mm
Diameter Tolerance	Standard grade: h8, h9; High-precision grade: h7, f7, g6, h6
Roundness	≤1/2 of diameter tolerance
Straightness	≤0.10mm/1000mm
Standard Length	φ40mm and below: 3 meters; Over φ40mm: 6 meters available (custom fixed lengths acceptable)
End Face Requirements	Flat ends, chamfered and deburred

V. Processing Technology & Surface Roughness

Process Type	Complete Process Flow	Surface Roughness
Process 1	Hot-rolled base material → Precision drawing → Centerless precision grinding	Ra 0.4～0.8μm
Process 2	Hot-rolled base material → Peeling & straightening → Centerless precision grinding	Ra 0.4～0.8μm
Process 3	Hot-rolled base material → Peeling & straightening → Centerless precision grinding → Polishing	Ra ≤0.2μm

VI. Physical Properties and Surface Quality

Item	Parameter Description
Material Density	7.70 g/cm³
Magnetism	Magnetic
Surface Appearance Quality	Free of cracks, peeling, pinholes, scale, rust and collision dents

VII. Application Scenarios
Home appliances, decorative components, food processing machinery, valve stems, general precision shafts with wear and corrosion resistance, general structural parts.