NAK 80| Thyssenkrupp 2738

Characteristic 2738

2738 steel properties as for grade 2311 ISO-BM, but with improved through-hardening.
Nitridable, hard chrome plateable, flame hardenable, polishable, grain-reliable as delivered.

Outstanding Properties 2738

• Higher hardness and better through-hardenability
• Wear and corrosive resistance
• strength enough to stand for presssure from injection plastic mold
• Texturing properties in equivalent to 2311
• Machining ability is in moderate level
• Can do EDM well
• Risk free of damange from heat treatment process
• Homogeneity hardness throughout the whole thickness
• Can do Passivation to enhance corrosive reisstance.

 

2738 Similar Properties/ Equivalent

Steel Classification	Standard				Assab	Sanyo	Daido	Thyssen	Hitachi
	DIN	JIS	AISI
Plastic Mould Steel	1.2738	SUS 420 J2	P21		Impax	PCM 40	NAK 80	2738	HPM 1
	1.2162		–		Prexi	M100	–	2162
	1.1203		1055		–	–	–	CK 55

 

Availability

Roundbar: 25mm – 220mm

Flat: 10mm – 120mm

Chemical Composition 2738

Type	C	Cr	Mn	Si	S	P	Ni	Mo
2738	0.35-0.45	1.80-2.10	1.30-1.60	0.20-0.40	0.030 Max	0.030 Max	0.90-1.20	0.15-0.25
NAK80	0.15	0.30	1.50	0.30	0.030 Max	0.030 Max	3.0	0.30

Mechanical Properties

Working Hardness: Max. 280-325 HB

Hot forming temperature: 1093-898 °C.

HEAT TREATMENT DATA

Stress relieving temperature: Approx. 550 ºC in the annealed state.
Soft annealing temperature: 720 ºC
Hardening temperature: 880 ºC
Quenching hardness Max.58 HRC (in oil, hot bath or vacuum)
Tempering: after quenching HRC 49

 

Application

Alloy die-casting mould ; Hot-pressing mold, all kinds of hot forging die; Metal extrusion die, die set.