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Yield Point s0.2 MPa

Yield Point s0.2 MPa

Yield Point s0.2 MPa

(OP)
Hello, we are quoting a steel part that is material 42 CrMo4V or equivalent.

The spec calls for a Yield Point 750<s0.2<800 MPa.

Can you me understand in US terms what the Yield point and the numbers after it mean?

thank you

RE: Yield Point s0.2 MPa

bulldogwld;
Yes. The yield point is derived from a standard tensile test of the subject steel. It is the value, expressed in tensile stress (force/area) where the material will permanently deform by 0.2% elongation. It would appear that the yield point is being expressed within a range of 750-800 MPa.

You can convert the MPa into Psi
750 MPa ~ 108,788 Psi
800 MPa ~ 116,030 Psi

RE: Yield Point s0.2 MPa

(OP)
Hello again, thank you for your help with this past question.

Are you familiar with a US equivalent that would meet these specs for 42 CrMo4V?

70mm +.2 - .4 (2.756 + .008 - .016) diameter Turned and polished

Yield point 750<s0.2<800 MPa - Elongation to fracture >12%
ISO - V impact test result at -40 deg C should be:
Average value over 3 samples >27J
Minimum value >70% of average value

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