Grossmann H Value:Anran Quenchant Selection and Known-Value Input

Identify the applicable Anran quenchant first, then use a measured or workpiece-calibrated H value in the Grossmann model. Historical oil and water ranges remain as comparison references only.

H Keep the unit: This page follows the Grossmann inch-based system. H has units of in⁻¹; H·D is dimensionless only when D is in inches. H is not a heat-transfer coefficient or a fixed medium “grade” independent of operating conditions.
Input basis
Measured, inversely determined, or workpiece-calibrated H; or a literature reference range
Model use
Combine with DI to estimate the 50% martensite center critical diameter of an infinitely long round bar
Does not replace
Tank cooling curves, process validation, or actual microstructural examination

Anran quenching media

Open product information and measured curves here; complete the actual selection in the report system below.

H-Value Input
Only finite values greater than zero are accepted; the page does not clamp or replace an out-of-range entry.
!
The input must have traceable provenance Record the medium name and batch, concentration, bath temperature, relative motion, tank/load condition, workpiece size, and the hardness or microstructural result used for inversion or calibration.
Lower bound
--
Upper bound
--
Unit
in⁻¹

This control selects a boundary; it does not generate a “typical value.” The selected value is only for preliminary sensitivity calculations and does not represent the measured H of your tank or a commercial quenchant.

Valid input. The current value can be passed to the round-bar critical-diameter calculator.
Model Input Result
Known / Calibrated Grossmann H
0.400
in⁻¹
Data type: User-entered known or calibrated value.
Dimensional input
H = 0.400 in⁻¹
Dimensionless group
H × D (D must be in inches)
Model object
Infinitely long round bar, 50% martensite at the center
Condition dependence
Medium condition, temperature, relative motion, load, and workpiece surface
Grossmann 1942 Table 17 Historical Reference Ranges
MediumRelative motionH lowerH upper

The air value is a traditional handbook reference; the oil and water ranges come from Table 17 of the 1942 paper by Grossmann and co-authors. This is historical engineering guidance, not an ASTM A255 tank-measurement table, and it contains no inferred H value for any Anran product.

Pass the current H to the round-bar critical-diameter calculator →
Method and limits: Grossmann, Asimow & Urban (1942), “Hardenability, Its Relation to Quenching, and Some Quantitative Data Concerning It”. ASTM D6200 and ISO 9950 specify cooling-characteristic tests with defined probes and test conditions. Without a validated inverse or calibration model, a cooling curve cannot be converted uniquely and directly to H.

Generate a quench-cooling analysis report

Enter the workpiece and quenching conditions first. Add other technical parameters only when they are available.

Enter basic information → Generate report → Request engineer review when needed

1. Workpiece

Additional workpiece information (optional)

2. Quenching conditions

Additional test parameters (optional)
Preliminary analysis available The final process must still be verified against workpiece dimensions and production conditions.
Curve basis Select a measured curve.

3. Generate report

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Transparently screen feasibility against a known H range and workpiece requirement.
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