Measured standard-probe cooling curves
Describes the medium response for the stated probe and test conditions. It is not the surface or core curve of a production workpiece.
Jominy end-quench curve analysis
Plot your measured hardness data to see how hardness changes with distance from the quenched end.
Test object
Measured distance–hardness data from a standard Jominy end-quench specimen
Analysis
Linear interpolation, critical-HRC crossing, and non-monotonic anomaly warnings
Explicitly excluded
No fabricated curve from steel grade and no unsupported mapping to hardness across a complex workpiece section
Measured Data and Criterion
wt%
HRC
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HRCMeasured Jominy Points
| # | Distance from Quenched End, mm | Hardness HRC | Remove |
|---|
Paste Two-Column Data
Comma, space, tab, or semicolon delimiters are accepted; importing replaces the current table.
Waiting for measured data. Enter at least three valid measured points to begin analysis.
Curve and Analysis Results
Enter at least three valid measured points
to plot the measured curve
to plot the measured curve
Measured-point line
Analysis criterion
Critical Hardness
--
HRC
50% M Crossing Distance
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mm
mm
Available after a valid curve is entered; no extrapolation beyond the measured range.
Valid Points
0
Measured Distance Range
--
Abnormal Rises
--
No crossing result yet. Enter a measured curve.
Measured-curve analysis · no material data generated
Test basis: ASTM A255 and ISO 642 specify the Jominy end-quench test method; this page only analyzes hardness data entered by the user.
50% M criterion: Carbon-content mode calculates only within 0.10–0.70% C; manual mode is for a critical HRC confirmed by metallography, a standard, or a company specification.
Interpolation limit: Linear interpolation is performed only between adjacent measured points; the last point is not extended outward.
How to use the tool and get product support
Enter measured points
Enter distance and HRC row by row or paste two columns. At least three valid points are required. The tool does not invent a measured curve from a steel grade alone.
Choose the analysis criterion
Select the 50% martensite hardness criterion using carbon content within this tool’s range, or enter a critical hardness you have confirmed. The criterion must suit the material and assessment method.
Interpreting the result
Lines connect measured hardness points; interpolation estimates between adjacent points. The crossing identifies where these data meet the selected criterion. Values outside the measured range are not extended as new measurements.
An end-quench curve describes material hardenability. Its distance axis is not the surface-to-core depth of a large liner.
Use material information in product selection
If production results differ from expectations, assess material hardenability alongside medium cooling characteristics and workpiece temperatures. Anran supplies quenchants, SYQ-2 testers and internal temperature measurement systems.
AR-SAG serves Cr–Mo steel SAG liners and large Cr–Mo steel parts. For high-chromium cast iron, discuss AR-HCCI separately; the steel criterion here does not apply.
End-quench curves and workpiece cooling curves are different records. If you already need a product, request a price without first preparing Jominy data.
Data classification
Three data types must remain separate
Every curve and conclusion on this site is identified by how the data was obtained.
Software-predicted curve
Calculated from a stated model and inputs. It is a prediction, not measured production data.
Measured internal workpiece cooling curves
Comes from internal points in the actual workpiece and is used to assess the real cooling process against post-quench hardness, microstructure and properties.
Unless explicitly identified and validated, one data type cannot be converted into or substituted for another.Read the technical method
Explore other products as needed
Every product can be quoted and purchased separately. Choose complementary products only when needed.