Russian Standard Forgings Case Study: Manufacturing High-Strength Alloy Steel Forgings to Russian Material Requirements

JIANGSU HUI XUAN NEW ENERGY EQUIPMENT CO.,LTD.

For Russian industrial equipment manufacturers, sourcing qualified forged components requires more than simply matching a product drawing.

The forging supplier must understand the Russian steel grade system, TU and GOST requirements, chemical composition limits, mechanical properties, low-temperature impact requirements, hardness ranges, and non-destructive testing requirements.

JIANGSU HUI XUAN NEW ENERGY EQUIPMENT CO.,LTD. specializes in industrial forgings, precision machining, material control and quality management.

This case study demonstrates our capability to manufacture multiple high-strength alloy steel forgings according to Russian material specifications, including 34ХН1М, 34ХН1МА and 20Х2Н4А, while controlling chemical composition, mechanical properties, hardness and non-destructive testing.

The project demonstrates an important capability for Russian customers:

Huixuan can manufacture forgings according to Russian material grades and control the chemical composition to the specified TU/GOST requirements.

1. Project Overview

The project involved a series of industrial forgings manufactured according to approved drawings and specified Russian material requirements.

The specification covered three principal steel grades:

• 34ХН1М

• 34ХН1МА

• 20Х2Н4А

The documented requirements included chemical composition, minimum yield strength, tensile strength, low-temperature impact performance and hardness.

The project therefore required more than conventional forging capability.

The manufacturing process had to connect:

Russian material specification → Raw material control → Forging → Heat treatment → Mechanical-property verification → NDT → Final inspection

This type of specification-driven production is particularly important for industrial customers purchasing critical forged components.

2. The Key Challenge: Matching Russian Material Requirements

One of the most technically demanding aspects of this project was the requirement to manufacture steel grades according to Russian TU and GOST standards.

The specification explicitly identified:

34ХН1М according to ТУ 108.17.1050-78

with the following chemical composition requirements:

These values are taken directly from the project specification.

The specification also covered:

34ХН1МА according to ТУ 108.17.1050-78

with:

The tighter limits for copper, sulfur and phosphorus compared with 34ХН1М demonstrate why simple grade-name matching is not sufficient. The actual chemical composition must be controlled against the specified grade requirements.

3. 20Х2Н4А: Controlling a Different Russian Alloy Steel Grade

The project also specified:

20Х2Н4А according to GOST 4543-71

The required chemical composition was:

This provides a useful example of the importance of material-specific chemical control.

Different Russian alloy steel grades have different:

• Carbon ranges

• Nickel requirements

• Chromium requirements

• Molybdenum requirements

• Aluminum requirements

• Sulfur and phosphorus limits

Therefore, a forging supplier serving Russian industrial customers needs to manage the material specification at the element-by-element level, rather than simply confirming the steel grade name.

4. Mechanical Properties Are Defined Before Production

The project did not rely only on chemical composition.

Mechanical-property requirements were also clearly defined for each forging.

For the 34ХН1М forgings, the specification required:

• Yield strength: 700–850 N/mm²

• Tensile strength: 850 N/mm² minimum

• Average impact energy at -40°C: 50 J

• Hardness: 262–293 HB for the listed forgings

For 34ХН1МА forgings, the documented requirements included:

• Yield strength: 700–850 N/mm²

• Tensile strength: 850 N/mm² minimum

• Average impact energy at -40°C: 50 J

• Hardness requirements in the specified range, with the project table showing 262–293 HB and, for one listed forging, 262–311 HB.

For 20Х2Н4А, the specification required:

• Yield strength: 685 N/mm² minimum

• Tensile strength: 835 N/mm² minimum

• Average impact energy at -40°C: 49 J

• Hardness: 262–311 HB

These are project-specified acceptance requirements rather than claimed final test results.

5. Why -40°C Impact Performance Matters

One of the most significant requirements in this project was the low-temperature impact requirement.

The specification required average impact energy at:

-40°C

with values of approximately:

49–50 J

depending on the steel grade and forging.

This requirement is particularly relevant when supplying forged components for applications where low-temperature mechanical performance is part of the technical specification.

It also demonstrates why material selection, forging, heat treatment and mechanical-property verification must be treated as an integrated process.

A forging supplier cannot reliably address low-temperature impact performance through machining alone.

The manufacturing logic must begin much earlier:

Correct steel composition → Controlled forging → Appropriate heat treatment → Mechanical-property testing

6. Material Composition Control: Our Capability for Russian Specifications

For Russian customers, one of the key advantages of working with an experienced forging manufacturer is the ability to translate a Russian technical specification into a controlled manufacturing requirement.

For example, the three steel grades in this project required substantially different alloying systems.

34ХН1М

The material requires controlled levels of:

C + Si + Mn + Ni + Cr + Mo

with additional limits on Cu, S and P.

34ХН1МА

The basic alloy system is similar, but the specification introduces tighter limits for:

Cu + S + P

20Х2Н4А

The composition shifts toward a higher nickel requirement:

Ni = 3.25–3.65%

while aluminum is also specifically controlled at:

Al = 0.02–0.04%

This means the production process must be capable of distinguishing and controlling each grade accurately.

For Huixuan, this is an important part of our material quality-control capability.

7. Forging Process: Converting Material Requirements into a Controlled Component

After material selection, forging establishes the basic shape and material condition of the component.

For large or technically demanding industrial forgings, the forging process must consider:

• Starting material

• Heating

• Forging temperature

• Deformation

• Forging sequence

• Cooling

• Heat-treatment condition

• Machining allowance

The objective is not simply to produce the required shape.

The objective is to create a forging that provides a suitable foundation for achieving the required mechanical properties and final machining dimensions.

This is why Huixuan treats forging and machining as connected manufacturing processes.

8. Heat Treatment and Mechanical Properties

The project specification defined mechanical properties and hardness as part of the acceptance requirements.

This means heat treatment becomes a critical manufacturing stage.

The relationship can be summarized as:

Chemical Composition

↓

Forging Process

↓

Heat Treatment

↓

Mechanical Properties

↓

Hardness & Impact Testing

The target values cannot be considered independently.

For example, the 34ХН1M specification combines:

700–850 N/mm² yield strength

with:

≥850 N/mm² tensile strength

and:

≥50 J average impact energy at -40°C

along with the specified hardness range.

This creates a multi-parameter quality-control system rather than a single hardness-based acceptance criterion.

9. Non-Destructive Testing

The specification required non-destructive testing according to:

GB/T 6402-2008, Class 3

for defect inspection.

For forged components, NDT provides an additional level of quality verification beyond chemical analysis and mechanical testing.

The overall quality logic therefore includes:

Chemical composition

Mechanical properties

Hardness

Impact performance

Non-destructive testing

This multi-dimensional inspection approach is important for industrial forgings where internal and material quality can be as important as final dimensions.

10. From Forging to Precision Machining

Huixuan's capability is not limited to producing forged blanks.

For customers requiring finished components, the manufacturing process can continue from:

Forging → Heat Treatment → Machining → Dimensional Inspection

Precision machining is important because a forged component normally requires subsequent machining to achieve its final geometry.

An effective forging supplier must therefore consider machining requirements during the forging stage.

This can help control:

• Forging allowance

• Machining time

• Material removal

• Tool consumption

• Dimensional accuracy

• Overall manufacturing cost

The combination of forging + machining allows Huixuan to manage the manufacturing chain more efficiently.

11. Cost Control Through Process Integration

For industrial customers, cost competitiveness is not simply determined by the price of raw material.

The total manufacturing cost is affected by:

Material utilization + Forging efficiency + Heat treatment + Machining time + Inspection + Rework risk

An optimized forging blank can reduce unnecessary machining.

Better material control can reduce the risk of producing components from the wrong chemical composition.

Controlled forging and heat treatment can reduce the risk of mechanical-property deviations.

Early inspection can identify problems before additional machining costs are incurred.

Therefore, Huixuan's cost-control strategy is based on:

Process optimization rather than simply reducing product specifications.

12. Quality Control for Russian Customers

For Russian industrial buyers, the ability to work with Russian technical documentation is an important part of supplier capability.

This project demonstrates experience with:

• Russian steel grades

• TU specifications

• GOST standards

• Chemical composition requirements

• Mechanical-property requirements

• Low-temperature impact requirements

• Hardness requirements

• Non-destructive testing

• Forged components

• Precision machining

The specification explicitly requires the forgings to be supplied in strict accordance with approved drawings.

This provides a clear production principle:

Drawing requirements + material requirements + inspection requirements must all be satisfied simultaneously.

13. Project Data at a Glance

The above values are taken from the project specification.

14. What This Case Demonstrates About Huixuan

This project highlights four core capabilities of JIANGSU HUI XUAN NEW ENERGY EQUIPMENT CO.,LTD.

1. Russian Material Specification Capability

Huixuan can work with Russian steel grades and technical specifications, including 34ХН1М, 34ХН1МА and 20Х2Н4А.

2. Chemical Composition Control

The project demonstrates the importance of controlling individual alloying elements according to TU and GOST requirements rather than relying only on the material designation.

3. Forging + Precision Machining

Huixuan can connect the forging process with downstream machining requirements, helping control dimensional accuracy and manufacturing efficiency.

4. Quality and Cost Control

By integrating material control, forging, heat treatment, inspection and machining, Huixuan focuses on reducing quality risks while maintaining manufacturing efficiency.

Conclusion

For Russian industrial buyers, a qualified forging supplier must understand more than the geometry of a component.

The supplier must understand the material specification behind the drawing.

This case demonstrates Huixuan's ability to work with Russian alloy steel requirements, including:

34ХН1М according to ТУ 108.17.1050-78

34ХН1МА according to ТУ 108.17.1050-78

20Х2Н4А according to GOST 4543-71

The project included detailed requirements for chemical composition, yield strength, tensile strength, hardness, and impact performance at -40°C, together with non-destructive testing according to GB/T 6402-2008 Class 3.

For Russian customers looking for a China-based forging manufacturer, the key capability is therefore not simply:

“Can the supplier make the forging?”

It is:

“Can the supplier understand and control the material, forging, heat treatment, machining and inspection requirements behind the Russian specification?”

JIANGSU HUI XUAN NEW ENERGY EQUIPMENT CO.,LTD. builds its forging solutions around this integrated approach:

Russian Material Specification → Controlled Forging → Heat Treatment → NDT → Precision Machining → Quality Verification

This is the manufacturing capability Huixuan brings to Russian industrial forging projects.