Material-specific hardness relationships; the applicable edition and material scope must be confirmed before use.
Engineering
Tensile-strength approximation
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Your result
MPa
Approximate ultimate tensile strength
FormulaApproximate UTS (MPa) ≈ 3.45 × HB for many carbon and low-alloy steels.
- Enter the known values.
- Apply the displayed formula.
- Review the result and supporting values.
Worked example: 200 HB corresponds to approximately 690 MPa UTS.
Estimate notice: This tensile-strength approximation result is an estimate based only on the values and assumptions shown. Verify important decisions with the relevant official source or a qualified professional.
Material-specific empirical estimate only. Verify with tensile testing and the applicable material specification.
Understand the result before using it
Tensile-strength approximation uses brinell hardness to calculate its result. It applies a stated engineering relationship to idealized dimensions or material values entered by the user.
Formula, assumptions, and example
Formula
Approximate UTS (MPa) ≈ 3.45 × HB for many carbon and low-alloy steels.
Assumptions
- The entered brinell hardness are complete, valid, and use the units or format shown beside each field.
- Geometry, loading, boundary conditions, and material properties match the simplified model.
- User-entered properties come from an applicable specification or test certificate.
Worked example
200 HB corresponds to approximately 690 MPa UTS.
When to use it
Good uses
- Perform a preliminary calculation or independent arithmetic check.
- Compare candidate dimensions, materials, or unit systems.
- Document the assumptions to verify later against the controlling standard.
Limitations
Common mistakes to avoid
- The calculation does not select safety factors, evaluate failure modes, certify materials, or check regulatory compliance.
- Never treat a generic property or hardness conversion as a substitute for testing and professional design review.
- Material-specific empirical estimate only. Verify with tensile testing and the applicable material specification.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
The controlling sources for properties, tolerances, test methods, and acceptance criteria.
Questions about this calculation
What does the Tensile-strength approximation calculate?
Tensile-strength approximation uses brinell hardness to calculate its result. It applies a stated engineering relationship to idealized dimensions or material values entered by the user. The formula used is: Approximate UTS (MPa) ≈ 3.45 × HB for many carbon and low-alloy steels.
Which inputs affect the Tensile-strength approximation result?
The result uses brinell hardness. Changing any of these values can change the output, so enter them using the labels and units shown.
Is the Tensile-strength approximation result exact?
This tensile-strength approximation result is an estimate based only on the values and assumptions shown. Verify important decisions with the relevant official source or a qualified professional.
When should I verify a Tensile-strength approximation result?
Verify it before any financial, health, academic, construction, safety, or engineering decision. Use the primary source or an appropriately qualified professional.
Clear answers, without the guesswork
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