What is ERP in Metals Manufacturing — and Why Do So Many Manufacturers Outgrow Theirs?

Table of Contents

You spent £200,000 on an ERP system seven years ago. The implementation took 14 months. You had consultants on site for most of it. And now your operations team has a spreadsheet open in the background at all times because the ERP can’t tell them which bars have 3.1 certs.

This is the metals manufacturing ERP story. It plays out across the industry, from small stockholders to mid-size service centres. The ERP handles finance and orders reasonably well. The shop floor works around it.

Let’s break down why this happens — and what a sensible solution looks like.

What is ERP?

ERP (Enterprise Resource Planning) is a category of software that integrates core business management functions into a single system.

The idea is elegant: one system of record for everything. You enter a sales order once. The system updates inventory, schedules production, triggers purchasing, posts accounting entries, and generates the despatch documentation. No rekeying. No silos. One version of the truth.

In theory.

The modules in a typical ERP include:

Finance and accounting — general ledger, accounts payable, accounts receivable, management accounts
Sales order management — orders, pricing, customer records, quotations
Procurement — purchase orders, supplier management, goods receipt
Inventory — stock records, locations, movements
Production — works orders, bills of material, routing
HR and payroll — headcount, payroll, absence management (in larger systems)

For a manufacturing business, the promise of ERP is a connected view of the entire operation. For many businesses, it largely delivers on that promise — in the back office.

Common ERP Systems in Metals Manufacturing

The metals industry uses a wide range of ERP systems, from large enterprise platforms to industry-specific packages:

SAP — dominant in large steel producers and some service centres; powerful but expensive and complex
Sage 200 / Sage X3 — common in UK SMEs; solid financials but limited metals-specific functionality
Epicor — used in some metals and distribution businesses; better manufacturing capability than many SME ERPs
Infor CloudSuite Industrial (SyteLine) — used in manufacturing environments, some metals capability
Syspro — common in metals distribution and manufacturing, particularly in Southern Africa and some UK operations
Dynamics 365 / Business Central — Microsoft’s ERP, increasingly common in SMEs; flexible but requires significant metals-specific customisation
Metals-specific ERP — a handful of niche vendors serve the metals distribution and service centre market specifically; better fit out of the box but smaller development investment and support ecosystems

What ERPs Do Well in Metals

It’s worth being fair about this. ERPs aren’t bad. They’re just not designed for the specific operational problems of metals manufacturing.

Finance and accounting. ERPs are very good at this. Purchase ledger, sales ledger, nominal coding, management accounts, VAT returns. If your ERP is any good at all, these work well.

Sales order management. Taking orders, managing customer records, pricing, quotations. ERPs handle the commercial side of order management competently.

Procurement and goods receipt. Raising purchase orders, matching to delivery notes, posting goods receipt. ERPs do this — the gaps emerge in the detail of what’s recorded, not in the basic process.

Basic inventory location. How many tonnes of 25mm round bar are in location B3? Most ERPs can answer that.

Despatch and invoicing. Generating delivery notes, invoices, and posting the financial entries for despatches. ERPs handle this.

Where ERPs Fall Short in Metals

This is where the spreadsheets start appearing.

No Mill Certificate Reading

An ERP has no mechanism to read an incoming mill certificate, extract the heat number, grade, chemical composition, and mechanical properties, and store that data against the goods-in record. Someone does this manually — or it doesn’t get done properly.

The result: certificate data lives in PDFs in a folder, not in the ERP. When someone needs to find the cert for a specific heat number, they search the folder. Or their email. Or the filing cabinet.

No Cutting Optimisation

An ERP can record a works order to cut a bar. It cannot calculate the optimal combination of cuts to minimise waste across an entire batch of orders. That calculation requires specialist optimisation algorithms that no general-purpose ERP includes.

The result: cut plans are built manually, by experienced operators who do their best. The best they can do is significantly worse than a computer optimising the problem properly.

Inventory Data Is Stale

Most ERP inventory updates happen when transactions are posted — often at the end of a shift or the next morning. The system’s inventory view is hours behind reality. In a busy operation, that means the ERP says you have material you’ve already used, and it doesn’t know about material you’ve received.

Sales teams quote based on ERP inventory. They promise material that isn’t available. Or they hold back from quoting because the ERP shows stock they know isn’t really there.

No Heat Number Tracking

Heat number is not a standard field in most ERP systems. Some businesses add it as a custom field on a stock lot, but it’s a workaround, not a designed feature. The ERP has no concept of the heat number as the root of a traceability chain, and no built-in logic for maintaining that chain through partial picks, off-cuts, and despatch documentation.

No Grade Substitution Logic

The ERP doesn’t know that S355 can fulfil an S275 requirement. It doesn’t know that EN19 cannot substitute for EN8 without engineering approval. These rules live in people’s heads.

The Spreadsheet Gap

Here’s what actually happens in most metals businesses with an ERP.

The ERP handles the finance and commercial sides. The shop floor runs on spreadsheets.

There’s a spreadsheet for the cert register — listing heat numbers and what certs have been received. There’s a spreadsheet for the cut plan — the operator builds it manually each morning. There’s a spreadsheet for available stock — the one that’s more up to date than the ERP. There’s a spreadsheet for committed stock — because the ERP doesn’t show real-time allocations.

These spreadsheets are maintained by specific people. When those people go on holiday, no one knows where the spreadsheets are or how they work. When someone updates the wrong version, the data is wrong. When the spreadsheet has 10,000 rows and no one has cleaned it in three years, it’s a liability.

The spreadsheet gap is not a sign that your team isn’t good enough. It’s a sign that the ERP isn’t designed for your operational reality.

Why Replacing the ERP Isn’t the Answer

When operations teams reach their frustration threshold with the ERP, the instinct is often to replace it. Find a better system. One that does everything.

The problem with this instinct:

Duration. ERP replacements take 12–24 months minimum. During that time, the business keeps running on the old system.
Cost. Implementation costs for a replacement ERP in a mid-size metals business routinely run to six figures. Often seven.
Disruption. Every workflow changes. Finance, sales, operations, despatch — all at once.
Risk. ERP replacements have a poor track record. Many go over time, over budget, or fail to deliver the promised functionality.
Data migration. Years of historical data — certs, heat numbers, stock movements, customer records — all need to migrate cleanly.

And after all that? You’ve probably got a new ERP with the same metals-specific gaps, because metals is a niche that most ERP vendors don’t prioritise.

How GoSmarter Fills the Gap Without Replacing Your ERP

GoSmarter is not an ERP. It doesn’t replace your ERP. It does the metals-specific jobs your ERP can’t do — and it sits alongside the ERP, not instead of it.

MillCert Reader reads mill certificates automatically and stores the data against the stock record. Your ERP doesn’t have to do this.
Cutting Optimiser generates optimal cut plans from your open orders and available stock. Your ERP doesn’t have to do this.
Inventory Management tracks stock by heat number, grade, cert status, and commitment in real time. Your ERP doesn’t have to do this.

The ERP keeps doing what it does well: finance, procurement, sales orders. GoSmarter handles the shop floor operations that the ERP can’t.

The best tech stack in metals manufacturing in 2025 looks like this: ERP for the back office, GoSmarter for the shop floor. Two systems, each doing what it’s actually built for.

FAQ

Does GoSmarter integrate with ERP systems?

Yes. GoSmarter is designed to work alongside existing ERP systems rather than replace them. Integration points typically include sales order import (so GoSmarter knows what needs cutting and shipping) and inventory updates (so the ERP’s financial records reflect actual stock movements). The specific integration depends on the ERP in use. GoSmarter’s implementation team has worked with Sage, Dynamics, Epicor, and others.

What if our ERP is already heavily customised for metals?

Some metals businesses have invested significant sums in customising their ERP — adding heat number fields, building cert management modules, writing cutting plan tools. If those customisations are working, there may be no need to replace them. The GoSmarter conversation starts with understanding what’s already working and what isn’t. We fill gaps; we don’t create new ones.

How long does it take to implement GoSmarter alongside an existing ERP?

Significantly less than an ERP replacement. GoSmarter implementations are typically measured in weeks, not months. Because GoSmarter focuses on specific operational functions rather than the whole business, the scope is contained. You don’t need to migrate your full financial history or retrain your accounts team. The people who benefit most — the operations team, the goods-in team, the saw operators — are the ones whose processes change.

We're a small operation. Do we need an ERP at all?

That depends on your complexity. Very small operations — a single site, a handful of staff, a limited product range — can sometimes manage adequately with accounting software and specialist tools like GoSmarter. Once you have multiple locations, a large customer base, complex pricing, and significant procurement activity, an ERP’s financial and commercial management capabilities become genuinely valuable. The question isn’t whether to have an ERP — it’s whether to expect the ERP to also do your metals-specific shop floor operations, which it won’t do well.