alloygen for foundries · pilot

Charge from your stock, heat treatment and a heat passport.

Send your stock, furnace and grade — get the charge in addition order, the expected analysis against the tolerance field and the cost per kilogram of good casting. Every number below was computed by the engine on a fictional foundry's stock.

Data under reviewPilot, under review: grade limits from secondary sources

Operation

Engine examplealloygen.charge_calc/1Data under review

Charge

Input: 40X, 800 kg, your stock

Charge for 40X in furnace IF_1T: 799.8 kg tapped, 41.6 UAH per kg of good casting.

Tapped: 799.8 kg
Charged: 824.5 kg
Per kg of good casting: UAH 41.6
Heat total: UAH 21,625

Charge in addition order

#	When	Material	Mass	Cost
1	on the hearth, before charging	`GRAPH` carburizer	3.0 kg	UAH 78
2	charging	`SCRAP_CLEAN` scrap	807.0 kg	UAH 11,702
3	after the charge has melted	`FECR` ferroalloy	10.5 kg	UAH 1,239
4	after the charge has melted	`FEMN` ferroalloy	2.5 kg	UAH 205
5	after the charge has melted	`FESI` ferroalloy	1.5 kg	UAH 108
	Charge total		824.5 kg	UAH 13,332

Expected analysis vs the grade field, wt %

Element	Grade field	Expected	Status
C	0.36–0.44	0.38690.3869	in field
Si	0.17–0.37	0.19540.1954	in field
Mn	0.5–0.8	0.5260.526	in field
Cr	0.8–1.1	0.84910.8491	in field
Ni	≤ 0.3	0.030.03	in field
Cu	≤ 0.3	0.06050.0605	in field
P	≤ 0.035	0.01950.0195	in field
S	≤ 0.035	0.01570.0157	in field

Assumptions, warnings and sources

Warnings

Mediumgrade 40X limits are checked against secondary sources, not the text of GOST 4543-2016 / DSTU 7806:2015 (table 1 as quoted elsewhere; the standard itself was not read). Not enough for a certificate.
Mediumbrittle temperature range LIT–ZDT 45 °C (at 1 °C/s); sulphur and phosphorus account for 28 °C (63%) of it: they segregate into the liquid between dendrites (at fs = 0.9: S 0.128%, P 0.116%). With S 0.00785% and P 0.00975% the range narrows to 31 °C. In a furnace without refining this is done only through the charge: scrap and ferroalloys lower in sulphur and phosphorus.
Mediumno product requirements given: there is nothing to select a grade by, so the calculation runs only for the grade named explicitly.
Mediumprices of 4 charge items have no price list or date (FECR, GRAPH, FEMN, FESI): the cost estimate is a demo — add your dated price list.
Mediumelement recovery in furnace IF_1T is a reference value, not derived from heat history. The expected analysis will differ from the ladle sample more, the more silicon, manganese, aluminium and titanium the charge has.
Mediumthe tariff of 8.5 UAH/kWh is not backed by a bill or contract — set your own tariff.
NoteCE(IIW) = 0.65 > 0.45: welding will need preheating.

Assumptions

The charge aims at the working window — the central 70% of each element's tolerance field, leaving room for analysis scatter.
Grade 40X limits come from the alloygen grade book via secondary sources (GOST 4543-2016, table 1); not checked against the official text — pilot, under review.
Charge compositions, prices and stock are the foundry's data; the service computes with them and does not verify them (warnings say where an item has no document).
Melting loss uses element recovery for furnace IF_1T (induction): reference values, not calibrated on this furnace's heat history.
Cost: charge at stock prices plus energy, lining and conversion from furnace data; lines and totals are in the response.

Sources

GOST 4543-2016 / DSTU 7806:2015 — structural alloy steel products, grades (via secondary sources)as of Oct 5, 2026 Data under review
SCRAP_CLEAN price: foundry invoice No. 118as of Sep 20, 2026

Engine examplealloygen.charge_calc/1Data under review

Stock without FeCr

Input: same stock, no ferrochrome

The stock cannot make 40X: Cr is short by 0.8062%, expected 0.0388% against a minimum of 0.8%. The engine says what is missing instead of “no solution”.

Status: stock falls short
Cr: short by: 0.8062 %
Cr: expected: 0.0388 %
Cr: grade field: 0.8–1.1 %

ImportantCr: short by 0.8062% — the stock cannot cover it.
ImportantCr: 0.0388 < 0.8% — outside the grade 40X tolerance field.

This is not a charge for the furnace: limits are broken on purpose to show the shortfall. The fix is a carrier of the element in stock — ferrochrome or pure chromium.

Assumptions, warnings and sources

Warnings

ImportantCr: short by 0.8062% — the stock cannot cover it.
ImportantCr: 0.0388 < 0.8% — outside the grade 40X tolerance field.
Mediumgrade 40X limits are checked against secondary sources, not the text of GOST 4543-2016 / DSTU 7806:2015 (table 1 as quoted elsewhere; the standard itself was not read). Not enough for a certificate.
Mediumbrittle temperature range LIT–ZDT 45 °C (at 1 °C/s); sulphur and phosphorus account for 28 °C (63%) of it: they segregate into the liquid between dendrites (at fs = 0.9: S 0.127%, P 0.115%). With S 0.0078% and P 0.00965% the range narrows to 31 °C. In a furnace without refining this is done only through the charge: scrap and ferroalloys lower in sulphur and phosphorus.
Mediumno product requirements given: there is nothing to select a grade by, so the calculation runs only for the grade named explicitly.
Mediumprices of 3 charge items have no price list or date (GRAPH, FEMN, FESI): the cost estimate is a demo — add your dated price list.
Mediumelement recovery in furnace IF_1T is a reference value, not derived from heat history. The expected analysis will differ from the ladle sample more, the more silicon, manganese, aluminium and titanium the charge has.
Mediumthe tariff of 8.5 UAH/kWh is not backed by a bill or contract — set your own tariff.
NoteCE(IIW) = 0.489 > 0.45: welding will need preheating.

Assumptions

The charge aims at the working window — the central 70% of each element's tolerance field, leaving room for analysis scatter.
Grade 40X limits come from the alloygen grade book via secondary sources (GOST 4543-2016, table 1); not checked against the official text — pilot, under review.
Charge compositions, prices and stock are the foundry's data; the service computes with them and does not verify them (warnings say where an item has no document).
Melting loss uses element recovery for furnace IF_1T (induction): reference values, not calibrated on this furnace's heat history.
Cost: charge at stock prices plus energy, lining and conversion from furnace data; lines and totals are in the response.
The problem was solved elastically: composition limits were broken at a penalty to show what is missing and by how much — this is not a charge for the furnace.

Sources

GOST 4543-2016 / DSTU 7806:2015 — structural alloy steel products, grades (via secondary sources)as of Oct 5, 2026 Data under review
SCRAP_CLEAN price: foundry invoice No. 118as of Sep 20, 2026

Engine examplealloygen.heat_treatment/1Data under review

Heat treatment

Input: 240–280 HB, 30 mm section

Routes generated: 40, shown: 4, closest to 240–280 HB for a 30 mm section. Your own route is checked first.

Ac1: 737 °C · 717–757
Ac3: 772 °C · 747–797
Ms: 335 °C · 310–360

Routes, yours first

Route	Hardness, HB (interval)	Fit
quench 850 °C, oil + temper 550 °C, 2.0 h your route	341 275–418	borderline
quench 810 °C, oil + temper 690 °C, 2.0 h	262 215–319	borderline
quench 810 °C, oil + temper 700 °C, 2.0 h	262 215–319	borderline
quench 810 °C, polymer + temper 690 °C, 2.0 h	262 215–319	borderline
quench 810 °C, polymer + temper 700 °C, 2.0 h	262 215–319	borderline

Assumptions, warnings and sources

Warnings

Mediumtempering at 550 °C is in the reversible temper-embrittlement range with molybdenum below 0.20%: after tempering cool in water or oil, not with the furnace.

Assumptions

Properties depend not on composition alone but on composition, route and section together; without a route, strength and hardness are not predicted.
Every prediction is an empirical model with an interval and a validity range; outside the range the number is computed but must not be relied on.
Austenitizing and normalizing: Ac3 by Andrews plus 30…50 °C; tempering: a Hollomon–Jaffe grid; where models are out of range, grade-book routes with a source.
Grade 40X limits come from the alloygen grade book via secondary sources (GOST 4543-2016, table 1); not checked against the official text — pilot, under review.
Composition used: the middle of the 40X tolerance field.

Sources

GOST 4543-2016 / DSTU 7806:2015 — structural alloy steel products, grades (via secondary sources)as of Oct 5, 2026 Data under review

Engine examplealloygen.passport/1Data under review

Heat passport

Input: no sample analysis

Without a sample analysis it is only a draft passport for 40X: the calculated composition is in the field for 8 of 8 specified elements.

Document: draft
Certificate: no
Elements in field: 8 / 8
Form fields: 8

DRAFT · CALCULATED DOCUMENT · NOT A CERTIFICATE

What a passport needs

the ladle or product sample analysis of this heat: heat number, date, sample type, method, laboratory, instrument, manufacturer, a signatory independent of production, and all specified elements (C, Si, Mn, P, S, Cr, Ni, Cu)
the text of EN 10204 — to check the document form

Assumptions, warnings and sources

Warnings

Mediumgrade 40X limits are checked against secondary sources, not the text of GOST 4543-2016 / DSTU 7806:2015 (table 1 as quoted elsewhere; the standard itself was not read). Not enough for a certificate.
Mediumbrittle temperature range LIT–ZDT 45 °C (at 1 °C/s); sulphur and phosphorus account for 28 °C (63%) of it: they segregate into the liquid between dendrites (at fs = 0.9: S 0.128%, P 0.116%). With S 0.00785% and P 0.00975% the range narrows to 31 °C. In a furnace without refining this is done only through the charge: scrap and ferroalloys lower in sulphur and phosphorus.
Mediumthe “heat treatment” cost line 3797.87 (3173.97…4866.32): heat-treatment furnace efficiency, holding losses, furnace-hour rate and oil use and price are demo values. Replace them with your own furnace data.
Mediumno product requirements given: there is nothing to select a grade by, so the calculation runs only for the grade named explicitly.
Mediumonly a draft was issued: there is no actual ladle or product sample analysis — the composition in the document is calculated.
Mediumthe document form is not checked against the text of EN 10204: the standard was not bought, fields come from open descriptions.
Mediumprices of 4 charge items have no price list or date (FECR, GRAPH, FEMN, FESI): the cost estimate is a demo — add your dated price list.
Mediumelement recovery in furnace IF_1T is a reference value, not derived from heat history. The expected analysis will differ from the ladle sample more, the more silicon, manganese, aluminium and titanium the charge has.
Mediumthe tariff of 8.5 UAH/kWh is not backed by a bill or contract — set your own tariff.
Mediumtempering at 600 °C is in the reversible temper-embrittlement range with molybdenum below 0.20%: after tempering cool in water or oil, not with the furnace.
Notean induction furnace does not lower hydrogen: [H] is set by charge moisture and atmosphere and is not predicted; the safe level for large forgings is 2 ppm, reached at equilibrium only at pH2 ≤ 7.24 mbar (5.72…9.84) at 1599 °C — that is vacuum. For a large forging: vacuum degassing or anti-flake treatment; no section threshold was found in open sources — the foundry sets it.
NoteCE(IIW) = 0.65 > 0.45: welding will need preheating.

Assumptions

A passport is issued only from the actual sample analysis of this heat within the tolerance field; without a sample it is a draft stamped “not a certificate”.
Property forecasts never go into the passport: with no test report the line reads “not tested”.
The document form is not checked against EN 10204: the standard was not bought, fields come from open descriptions.
Grade 40X limits come from the alloygen grade book via secondary sources (GOST 4543-2016, table 1); not checked against the official text — pilot, under review.
Charge compositions, prices and stock are the foundry's data; the service computes with them and does not verify them (warnings say where an item has no document).

Sources

GOST 4543-2016 / DSTU 7806:2015 — structural alloy steel products, grades (via secondary sources)as of Oct 5, 2026 Data under review

pilot, under review

What is not verified yet — we say so

The engine adds these warnings to every answer until the cause is fixed. A calculation on reference coefficients looks exactly like one on calibrated ones, so we do not hide them.

GRADE_SECONDARY_SOURCE
Grade limits
Checked against secondary sources, not a purchased copy of the GOST/DSTU text. Not enough for a certificate — the pilot runs as “a calculation is a forecast”.
RECOVERY_UNCALIBRATED
Your furnace's recovery
A reference value for now. Once your furnace has a history of expected vs actual heats, the engine calibrates it itself.
PRICE_UNSOURCED
Charge prices and tariff
Without a price list or invoice the cost is a demo. Add a dated price and the warning goes away.
PASSPORT_FORM_UNVERIFIED
Passport form
Fields come from open descriptions of EN 10204; the standard has not been bought yet. Without a sample analysis a passport is always a draft.

Pricing — on request

The owner has not set plans or quotas yet. The pilot runs with three foundries on their own data; terms are agreed with each.

Pilot
A trial key for the pilot: charge, heat treatment and draft passports on your stock and your furnace.
on request
Foundry
A monthly subscription for one foundry. Only a completed call counts: an input error does not use the quota.
on request
Group of foundries
Several furnaces and sites under one contract, a monthly report for each.
on request
Pay per call
For ERP and MES integrators: no monthly cap, billed by actual calls.
on request

There is no payment provider yet: invoices are issued manually from the monthly call report.

Write to us about a pilot

Connect your business: key, HTTP and MCP

coming soon

There is no public access: the service works with a key we issue after a contract or for a pilot. The same calculations — for your ERP, CRM or AI assistant.

MCP address (key required, not live yet)https://mcp.furnigen.app/alloygen/mcp

Key: issued by the operator after a contract or for a pilot and shown once; only its hash is stored.
HTTP: the key goes in a request header — for ERP, CRM and your own scripts; the answer is the same envelope with sources.
MCP: the same address and the same key — for an AI assistant in Claude or ChatGPT.

The server opens with the gateway launch. To get a key, write to us — see the Contact page.

Questions from metallurgists

Do you store our stock and prices?

No. Stock, furnace and target come with every request; between requests the service keeps only the call log of your key. The database holds only a hash of the key.

What if the stock cannot make the grade?

The engine does not answer “no solution”. It solves the problem elastically and says what is missing: in the example without ferrochrome, grade 40X is short of Cr by 0.8062%, and the stock has no carrier of that element.

Is the heat passport a certificate?

No. Without an actual sample analysis it is only a draft stamped “not a certificate”. With a sample analysis inside the field it is a candidate for an EN 10204 3.1 document, but the form is still being checked: pilot, under review.

How accurate are property predictions?

Every number comes with a model interval and a validity flag. Where no model exists (creep, impact toughness of alloy steels), the engine refuses and says what to use instead.

How much does it cost?

On request: plans are not set yet. The pilot runs on your foundry's data, terms are agreed separately.

Charge from your stock, heat treatment and a heat passport.

Charge

Charge in addition order

Expected analysis vs the grade field, wt %

Warnings

Assumptions

Sources

Stock without FeCr

Warnings

Assumptions

Sources

Heat treatment

Routes, yours first

Warnings

Assumptions

Sources

Heat passport

What a passport needs

Warnings

Assumptions

Sources

What is not verified yet — we say so

Grade limits

Your furnace's recovery

Charge prices and tariff

Passport form

Pricing — on request

Pilot

Foundry

Group of foundries

Pay per call

Connect your business: key, HTTP and MCP

Questions from metallurgists