I. Base Material

Item	Technical Parameters
Material Grade	316Ti
Chinese National Standard Grade	0Cr18Ni12Mo2Ti
UNS Grade	S31635
DIN Grade	1.4571

II. Chemical Composition (mass fraction wt%)

C	Si	Mn	P	S	Cr	Ni	Mo	Ti
≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	16.00～18.50	10.00～14.00	2.00～3.00	5×C～0.70

III. Mechanical Properties

Item	Mechanical Properties
Tensile Strength Rm	≥520 MPa
Yield Strength Rp0.2	≥205 MPa
Elongation after Fracture A	≥40%
Brinell Hardness	≤187 HB

IV. Dimensional Tolerance Specifications

Item	Technical Requirements
Common Diameter Range	φ3.0mm ～ φ300mm
Diameter Tolerance	Conventional grades: h8, h9; High-precision grades: h7, f7, g6, h6
Roundness	≤1/2 of diameter tolerance
Straightness	≤0.10mm/1000mm
Standard Length	3 meters for φ40mm and below; 6 meters for diameters above φ40mm (custom fixed lengths available)
End Face Requirements	Flat ends with chamfering and burr removal

V. Machining Process & 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 and straightening → Centerless precision grinding	Ra 0.4～0.8μm
Process 3	Hot-rolled base material → Peeling and straightening → Centerless precision grinding → Polishing	Ra ≤0.2μm

VI. Physical Properties and Surface Quality

Item	Parameter Description
Material Density	7.98 g/cm³
Magnetism	Non-magnetic / weakly magnetic
Surface Appearance Quality	Free of cracks, peeling, pinholes, scale, rust and impact bruises

VII. Application Scenarios
Components requiring resistance to intergranular corrosion after welding, heat exchangers, chemical processing equipment, marine service environments, high-temperature corrosion-resistant precision shafts, petrochemical equipment, food processing machinery.