2738 SUPER HH

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2738 SUPER HH

Description

Prehardened forged steel, of high quality and designed to have total hardening even for the highest thicknesses, ensuring that the hardness remains without significant loss through the block. Better weldability, texturing suitability and machinability compared to 1.2738HH steel. Good toughness and good temper back resistance. It is the first choice for prehardened moulding zones of intermediate hardness.

Main applications

Plastic injection moulds of any dimension and need for larger production series
Plastic injection moulds of reinforced plastics
Compression moulds
Die casting moulds for prototype series
Plastic extrusion dies

Delivery status

Hardened and tempered

Hardness of the supply

Min: 320 HB
Med: -
Max: 360 HB

Composition
Services
Heat Treatments
Download

Standards

EN: 40 CrMnNiMo 8-6-4
AISI: (P20)
DIN: (40 CrMnNiMo 8-6-4)
AFNOR: (40CMND8)
UNE: (F-5303)
W.Nr.: (1.2738)

Profiles available

	Thickness	Tolerance
Rectangular	250 - 960 mm	EN 10058

Chemical composition (%) 1

Min Med Max

0,22

0,45

0,10

0,60

1,60

0,030

1,20

2,10

0,15

0,70

1,20

Physical properties

Density : 7,85

10ˉ⁶m/mK

20 a 100 ⁰C	20 a 200 ⁰C	20 a 300 ⁰C	20 a 400 ⁰C	20 a 500 ⁰C	20 a 600 ⁰C	20 a 700 ⁰C
12,3	---	13,7	14,7	---	---	---

Thermal Conductivity W/mk

20 ⁰C	200 ⁰C	300 ⁰C	350 ⁰C	400 ⁰C	600⁰C	700 ⁰C
38	---	---	---	---	---	---

GPa

-100 ⁰C	0 ⁰C	20 ⁰C	100 ⁰C	200 ⁰C	300 ⁰C	400 ⁰C	500 ⁰C	600 ⁰C
---	---	205	---	---	---	---	---	---

Mechanical properties

Condition	Ø	Thickness	Mechanical properties
Condition	Ø	Thickness	Hardness	Rm	Rp0,2	ReH	A	Z	RC
Hardened and tempered	-	-	-	-	-	-	-	-	-
Drawn (+C)	-	-	-	-	-	-	-	-	-
Ground (+SH)	-	-	-	-	-	-	-	-	-
N/A	-	-	-	-	-	-	-	-	-
Hardened and tempered	-	-	-	-	-	-	-	-	-
Drawn (+C)	-	-	-	-	-	-	-	-	-
Ground (+SH)	-	-	-	-	-	-	-	-	-
N/A	-	-	-	-	-	-	-	-	-
Hardened and tempered	-	-	-	-	-	-	-	-	-
Drawn (+C)	-	-	-	-	-	-	-	-	-
Ground (+SH)	-	-	-	-	-	-	-	-	-
N/A	-	-	-	-	-	-	-	-	-
Hardened and tempered	-	-	-	-	-	-	-	-	-
Drawn (+C)	-	-	-	-	-	-	-	-	-
Ground (+SH)	-	-	-	-	-	-	-	-	-
N/A	-	-	-	-	-	-	-	-	-
Hardened and tempered	-	-	-	-	-	-	-	-	-
Drawn (+C)	-	-	-	-	-	-	-	-	-
Ground (+SH)	-	-	-	-	-	-	-	-	-
N/A	-	-	-	-	-	-	-	-	-
Hardened and tempered	-	-	-	-	-	-	-	-	-
Drawn (+C)	-	-	-	-	-	-	-	-	-
Ground (+SH)	-	-	-	-	-	-	-	-	-
N/A	-	-	-	-	-	-	-	-	-

Notes on mechanical properties

The hardness value is part of the material specification.

You can print this information

Updated on: 05.05.2022

Composition

Standards

EN: 40 CrMnNiMo 8-6-4
AISI: (P20)
DIN: (40 CrMnNiMo 8-6-4)
AFNOR: (40CMND8)
UNE: (F-5303)
W.Nr.: (1.2738)

Profiles available

- Rectangular
- 250 - 960 mm
- EN 10058

Chemical composition (%) 1

Min Med Max

0,22

0,45

0,10

0,60

1,60

0,030

1,20

2,10

0,15

0,70

1,20

Physical properties

Density : 7,85

10ˉ⁶m/mK

20 a 100 ⁰C	12,3
20 a 200 ⁰C	---
20 a 300 ⁰C	13,7
20 a 400 ⁰C	14,7
20 a 500 ⁰C	---
20 a 600 ⁰C	---
20 a 700 ⁰C	---

Thermal Conductivity W/mk

20 ⁰C	38
200 ⁰C	---
300 ⁰C	---
350 ⁰C	---
400 ⁰C	---
600⁰C	---
700 ⁰C	---

GPa

-100 ⁰C	---
0 ⁰C	---
20 ⁰C	205
100 ⁰C	---
200 ⁰C	---
300 ⁰C	---
400 ⁰C	---
500 ⁰C	---
600 ⁰C	---

Mechanical properties

Please refer to the table in the downloads section.

Notes on mechanical properties

The hardness value is part of the material specification.

Services
Heat Treatments

TAC Diagram

Tempering curve
Download
Download PDF documents
- 2738 SUPER HH's Technical File 336.12 Kb

Notes on mechanical properties

Notes on mechanical properties

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