Cold Heading Engineer
Engineering screening for drawings, blank volume, station risks and material routes.
Open engineer →ENGINEERING TOOLS · CHQ WIRE
Engineering Software & Tools
Quick calculators for wire area, weight, reduction ratio and RFQ readiness. Final acceptance depends on standards, drawings and inspection reports.
ENGINEERING SOFTWARE & TOOLS
Engineering software directory
Choose your software or calculator. Online calculations remain free.
Engineering calculators
Strength units, hardness, tensile estimates, wire area and weight, and drawing reduction.
Use the calculators below →Export and saved results
Installation and watermarked previews are free. Clean exports require membership; saving requires a verified email.
Open member services →Quick estimates
Make the first check clearer
These tools support early discussion only. Formal acceptance must follow the applicable standard, drawing, customer specification and inspection report.
Strength unit conversion
Exact unit conversion for MPa (N/mm²), kgf/mm², psi and ksi. 1 MPa = 1 N/mm².
Conversion follows unit definitions and does not establish a material or fastener property class.Steel hardness conversion
ISO 18265:2013 Table A.1, ten Brinell, Vickers, Rockwell and superficial Rockwell scales. No extrapolation.
Calculation data: ISO 18265:2013 Table A.1. Material, structure, heat treatment, test force and scale affect the result; formal acceptance requires the applicable standard table or an actual test.Hardness and tensile estimate
ISO 18265:2013 Table A.1 lookup and linear interpolation for unalloyed/low-alloy steels and cast steel. Estimates do not replace tensile testing.
Linear interpolation; no extrapolation. HV means HV10. Microhardness, case hardness, Leeb HL and Shore HS/HA/HD are excluded. Historical HB≤450 used steel balls; HB/HBW equivalence is approximate. Not for acceptance.Round wire area and weight
Drawing reduction ratio
RFQ readiness check
- Grade and standard
- Size, tolerance and delivery condition
- Quantity, application, drawing or failure photos