Material DB & Grade Cross-Ref

Material properties

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Typical room-temperature engineering values by material class. Indicative.

Grade cross-reference & substitution

Enter a grade designation

Cross-standard designations from the built-in grade DB. Substitutes ranked by composition distance within the same family; verify against the official standard.

CCT / TTT Diagram

Composition (wt%)

Grain size L (µm)

Cooling rate (°C/s)

Results

TTT / CCT diagram (schematic, estimated)

Quench CCT loop

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Diameter (mm)

Quench medium

Quench path overlay

Medium & diameter → equivalent Jominy distance → cooling rate → overlaid on the CCT diagram (surface & centre). Indicative.

Ms / Mf & Retained Austenite

Composition (wt%)

Quench temperature (°C)

Results

Critical points & heating temperatures

Andrews 1965 empirical; Ar are indicative cooling arrest lags. Heating windows are rule-of-thumb.

Quench-Temper Hardness

Composition (wt%)

Carbon content C (wt%)

As-quenched hardness HRC (optional)

Tempering temperature (°C)

Tempering time (h)

Mo (wt%) — secondary hardening

W (wt%)

V (wt%)

Results

Secondary hardening

Tempered hardness vs tempering temperature (2 h)

Process Recipe

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Target hardness HRC (optional)

Tempering time (h)

Carburizing / Nitriding

Process

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Temperature (°C)

Time (h)

Carbon potential (%)

Eff. depth criterion (%C)

Results

Carbon / nitrogen profile

Nitriding depth vs time

Nitriding temperature (°C)

Alloying factor (Al/Cr/Mo/V wt%)

Max time (h)

Results

Layer depth vs time

Carburizing depth vs time

Carburizing temperature (°C)

Max time (h)

Effective case depth vs time

Fick 2nd law, effective depth at 0.40 wt%C. Indicative.

Hardness Converter

From scale

Value

Converted values

Approximate (ASTM E140 / empirical). Verify for critical specs.

Quick reference tables

Temperature (°C)

Hardness HRC

Grain-coarsening temp.

Indicative only — verify against spec/data sheets.

Jominy Hardenability

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Jominy curve (HRC vs distance)

Weldability

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Plate thickness (mm)

Isothermal Quench

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Hardenability Band

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Composition tolerance (%)

Hardenability band (HRC vs distance)

Band from ±tolerance applied to each alloying element; indicative only.

Temper Embrittlement

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Temperature zones (°C)

Mechanical Properties

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Tempering temp (°C)

Yield strength (YS)

Estimated from phase fractions (mixture rule). Indicative only.

Section Core Hardness

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Diameter (mm)

Quench medium

Hardness vs depth

Core hardness by Jominy equivalent-distance method.

Quench medium selector

Mildest medium that fully hardens the section (reuses Jominy equivalent-distance model).

Charpy Impact KV

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Hardness HRC

Tempering temp (°C)

Grain size (ASTM No.)

Empirical estimate; embrittlement zones from temper window.

Distortion Risk

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Section shape

Diameter / thickness (mm)

Length (mm)

Quench medium

Risk score

Indicative only — verify distortion on a trial part before production.

Surface residual stress (rough estimate)

Surface hardness HRC

Core / sub-surface HRC

Process type

Rule-of-thumb from the surface–core hardness gradient; not an X-ray / diffraction measurement.

Non-Ferrous (Al/Ti/Ni)

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Not a phase-transformation model — no licensed thermodynamic database. Values are representative.

Fatigue / Creep / Fracture

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Tempering temp (°C)

Surface finish

Alternating stress σ_a (MPa)

Mean stress σ_m (MPa)

Creep (Larson–Miller)

Creep temperature (°C)

Design life (h)

Material class (creep)

Results

Weld HAZ & t₈/₅

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Heat input (kJ/mm)

Weld speed (mm/s)

Plate thickness (mm)

Preheat (°C)

Results

Recommended preheat temperature

Linearised from the EN 1011-2 chart (CEV + plate thickness). Conservative minimum — confirm against the WPS / welding procedure qualification.

Induction Hardening

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Frequency (kHz)

Power density (kW/cm²)

Results

Induction frequency to case depth

Target case depth (mm)

Precipitation TTP

Precipitating element

Element content (wt%)

Matrix carbon (wt%)

Aging time (h)

Results

TTP diagram (ln t vs 1/T)

⚠Estimates only. Always verify on a test piece before production.