Aisi D2 Tool Steel Mechanical Properties Characteristics - China

AISI D2 tool steel is a high-carbon, high-chromium cold work die steel.

Its core mechanical properties are extremely high wear resistance, high hardness, and moderate toughness.

Core Mechanical Performance Parameters

The mechanical properties of AISI D2 tool steel vary over a wide range, primarily depending on its heat treatment state (e.g., annealed, quenched, tempered).

The table below summarizes its performance data under typical heat treatment states (e.g., after hardening and tempering): | Performance Indicators | Typical Values ​​| Units | Supplementary Notes | | : --- | : --- | : --- | : --- | | **Hardness** | 60 - 62 (Typical Value) | HRC | Can reach over 60 after hardening; some studies show it can exceed 62 HRC.

| | | 710 - 792 | HV | Corresponds to Vickers hardness values ​​under different quenching processes.

| | **Tensile Strength** | 760 - 2000 MPa | Wide range, depends on heat treatment.

Up to 2000 MPa in the hardened state.

| | **Yield Strength** | 470 - 1510 MPa | Also varies with heat treatment state, approximately 1510 MPa in the hardened state.

| | **Elongation** | 1.27% - 5.8% | % | Indicates plasticity, a low value, approximately 5% in the conventionally hardened state.

| | **Impact Toughness** | 3.2 - 3.7 J | Low value, indicating brittle material.

Approximately 3.2 J after conventional oil quenching.

| | **Elastic Modulus** | 190 - 210 GPa | Stability indicator, stable value, minimally affected by heat treatment.

| | **Fatigue Strength** | 310 - 860 MPa | Also closely related to heat treatment and surface condition.

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