Tool Steel Selection for Coining & Powder Compaction Dies

Select tool steel by compressive pressure, abrasive wear, impact load, cracking risk, dimensional stability, and die support design. For coining and powder compaction dies, the main choice is usually between wear resistance, toughness, compressive strength, and resistance to bursting.

Quick Selection Guide by Tool Steel Grade

Choose the grade according to whether the tool is used for coining dies, powder compaction die cavities, punches, core rods, or support rings.

High-Volume Coining

D2 Tool Steel 1.2379 / SKD11 / Cr12Mo1V1

Recommended for press coining, sizing, long-run production, and powder compaction die inserts.

Reason: D2 provides high compressive strength and abrasion resistance where wear is the main failure risk.

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Die Wall Wear

D3 Tool Steel 1.2080 / SKD1 / Cr12

Recommended for powder compaction die inserts and coining dies where strong wear resistance is required.

Reason: D3 contains a high volume of wear-resistant carbides, making it suitable for abrasive powder flow and high-pressure die contact.

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Complex Dies

A2 Tool Steel 1.2363 / SKD12

Recommended for complex coining dies and powder compaction punches that need both toughness and dimensional stability.

Reason: A2 offers balanced wear resistance and toughness with low distortion during heat treatment.

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General Coining

O1 Tool Steel 1.2510 / SKS3

Recommended for cold-work air- and oil-hardening die applications where general wear resistance is required.

Reason: O1 is used as an oil-hardening cold-work steel option when the application does not require the highest alloy content.

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Shock Resistance

S1 Tool Steel 1.2550

Recommended for coining dies with deep configurations or sharp details where cracking is the main risk.

Reason: S1 sacrifices some wear resistance to gain toughness and resistance to chipping and splitting under shock load.

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Heavy Shock

S7 Tool Steel 1.2355

Recommended for coining dies and powder compaction punches that face impact, bending moments, and cracking risk.

Reason: S7 provides high impact strength and toughness for tools that may crack if made from more brittle high-wear steels.

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Tough Coining Dies

L6 Tool Steel 1.2714 / SKT4

Recommended when coining dies need higher toughness against cracking, chipping, or splitting.

Reason: L6 is selected where toughness is more important than maximum wear resistance in severe coining conditions.

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Deep Details

H11 Tool Steel 1.2343 / SKD6

Recommended for coining dies with deep circular grooves, thin sections, intricate details, or support ring requirements.

Reason: H11 provides high toughness to help prevent die splitting under severe compressive and bursting stress.

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Support Rings

H13 Tool Steel 1.2344 / SKD61

Recommended for tough coining dies, powder compaction punches, and support rings for hard inserts.

Reason: H13 offers toughness for tools or retainers where brittle wear-resistant inserts need strong support against bursting.

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Punch Face Wear

M2 High Speed Steel 1.3343 / SKH51

Recommended for powder compaction die walls or punches when stronger wear resistance is required.

Reason: M2 is used where punch faces or die walls become severely abraded and need higher wear resistance.

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Selection Summary

This table gives a faster comparison when the buyer already knows the die application and main failure risk.

Die Application	Main Requirement	Aobo Steel Grades
Press coining, sizing, and long-run coining dies	Compressive strength and abrasion resistance	D2, D3, A2
Coining dies with deep details or sharp configurations	Toughness and resistance to cracking or splitting	S1, S7, L6, H11, H13
Powder compaction die cavities and die walls	High abrasive wear resistance during powder flow and ejection	D2, D3, M2
Powder compaction punches and core rods	Balance of shock resistance, compressive strength, and wear resistance	S7, A2, D2, H13, M2
Hard inserts requiring external support	Tough retainer or support ring against bursting pressure	H11, H13

Need Tool Steel for Coining or Powder Compaction Dies?

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