/ Cold-Work · Daido Steel · "Rev·o·lu·tion"

DC53® Tool Steel

A medium-chrome, general-purpose cold-work tool steel from Daido Steel — exceptional toughness, wear resistance, compressive strength, and temper resistance, with machining 20–40% faster than D2.

Request a quote Download DC53® datasheet (PDF)

DC53 forged block with painted color-code.

/ At a glance

Type

Cold-Work · Air-Hardening

Hardness

HRC 58 / 60 / 62 / 64

Anneal BHN

210–225

Density

.2793 lb/in³ · 7.76 g/cm³

Color code

Orange / Purple

Mill

Daido Steel

Forms

Round 1/4–20″ · Flat ½–12″ thick × ≤24″ wide

Equiv.

High-perf alt. for D2 / M2

/ High-performance alternative for

Punches & dies Draw & form dies Shear blades Shredder knives Thread & form rolls Cold heading dies Mill rolls & slitters

/ Chemical composition (%)

C	Si	Mn	Cr	Mo	V
0.95	1.00	0.40	8.00	2.00	0.30

→ Primary carbides are smaller and more uniformly distributed than D2 — source of DC53's superior toughness and fatigue life.

/ Physical properties

Annealed hardness	BHN 210–225
Specific gravity	7.76 g/cm³
Density	.2793 lb/in³
Young's modulus (E)	21,700
Modulus of rigidity (G)	8,480
Poisson's ratio	0.28

/ Machining — surface feet per minute

Operation	HSS tools	Carbide tools
Turning	70 SFM	235 SFM
Drilling	50 SFM	150 SFM
Milling	55 SFM	195 SFM

→ Negative rake on mill and lathe inserts is recommended. DC53 typically machines 20–40% faster than D2 with up to 50% less tool wear.

Heat treatment.

Austenitize at 1,030°C / 1,885°F, oil or gas quench to 65°C / 150°F, then double high-temperature draw. Material growth runs .10%–.15% (.001″–.0015″ per inch).

/ Austenitize / temper / hardness

Austenitize	Tempering	Hardness
1,030°C / 1,885°F	520°C / 968°F	HRC 62/64
1,030°C / 1,885°F	540°C / 1,004°F	HRC 60/62
1,030°C / 1,885°F	550°C / 1,022°F	HRC 58/60

/ Harden / temper cycle

Pre-heat	800–850°C / 1,475–1,560°F
Austenitize	1,030°C / 1,885°F
Quench	65°C / 150°F · 2 bar pressure
Temper #1	520–550°C / 968–1,022°F
Temper #2	520–550°C / 968–1,022°F
Optional temper	400°C / 750°F (for EDM / PVD)
Hold time	60–90 min per inch of thickness

/ Vacuum austenitize times

Diameter / thickness	Heating time
≤ 4″ (100 mm)	20–30 min / inch
> 4″ (100 mm)	10–20 min / inch

/ Salt-bath austenitize times

Section	Immersion
1/4″ (5 mm)	5–8 min
1/2″ (12 mm)	8–10 min
3/4″ (20 mm)	10–15 min
1½″ (30 mm)	15–20 min
2″ (50 mm)	20–25 min
4″ (100 mm)	30–40 min

Field results.

From Daido's published application studies — DC53 vs. conventional die steel under matched conditions.

/ Blanking dies — Ni-based alloy components

+400% life

5,000 hits → 25,000 hits

D2 (HRC 58/59) replaced with DC53 (HRC 62/63). Die edge seizing eliminated by combination of high tempering temperature and higher base hardness.

/ Trimming die — 5140 stock with CVD coating

+281% life

11,000 hits → 42,000 hits

M2 HSS (HRC 60) replaced with DC53 (HRC 62/63), both CVD-treated. Higher base hardness improves coating effectiveness.

/ Cold-rolled bearing race blanking + forming

+72% life

220,000 hits → 380,000 hits

D2 (HRC 58/60) replaced with DC53 (HRC 62/63). Galling and edge chipping resolved by high hardness + high-temperature toughness.

/ Fine-blanking punch — long, thin geometry

+143% life

1,600 hits → 3,900 hits

D2 (HRC 56) replaced with DC53 (HRC 60). DC53's toughness allowed harder spec without tip cracking.

Need DC53® on your dock?

We stock DC53® rounds and flats in Bridgeport. Tell us the size and quantity — we'll come back with a price and a date.

Request DC53® quote

DC53®, NAK 55®, NAK 80®, DH2F®, PX5®, DH31-EX®, and DCMX® are registered trademarks of Daido Steel LTD. CPM®, V®, and Rex® are registered trademarks of Crucible Industries, LLC.