Special Steels provides a quality heat treatment and metallurgical service through our associate company Quality Heat Treatment Ltd.  Quality Heat Treatrment was formed 4 years ago and has developed into one of New Zealand's leading contract heat treaters.

Our company heat treats a wide variety of components for engineering firms, tool makers and major companies throughout the country, manufacturing plastic, aluminium, iron and steel products.  Together with associate companies Special Steels and Metals Ltd and Viking Steels, we offer a one stop shop with traceability from material supply to fully heat treated component.

Services
Heat treatment services include;
Fluidised bed furnaces
Tempering furnaces
Oil, water and air blast quenching
Pack annealing
Ion / Plasma Vacuum Furnace (Pulsed Plasma)
Fluid Bed Cold Quench (>6 bar over pressure quench rate)
Cryogenic / Sub Zero Treatment ( up to -170 Degrees C )

Evaluation services include;
Rockwell hardness
Metallurgical
Micro Hardness
Portable Hardness

Other services include;
Bead blasting
Vapour De-greasing

Processes
The processes we offer cover hardening, tempering, stress relieving, sub-zero treatment, annealing, normalising, solution treatment, carburising/ case hardening, precipitation hardening, nitriding, ion/ plasma nitriding, carbo-nitriding, ferritic nitro-carburising, austenitic nitro-carburising,de-embrittlement.  Hardness testing and metallographic examination.

We use efficient Fluidised Bed Furnaces with inert / neutral
atmosphere protection for decarb. and oxidation-free surfaces.
Inert alumina sand with no environmental pollution
Electric heating - non-polluting, renewable energy



Capabilities

Capacity
Size - 650mm dia x 1100mm long
Mass - approx. 350kgs ( hardening); approx. 600 kgs ( nitro-carburising /nitriding)

NEW  FAST TRACK LINE
Capacity
Size- 245mm dia x 900mm long

Materials
Tool Steels
Stainless Steels
Plain C & Alloy Steels
Non-Ferrous Alloys
Maraging Steels
Sintered Products

Delivery Lead Times
The recent addition of NEW computer controlled furnaces now allow us to offer QUICK TURNAROUND TIMES on heat treatment of steels,with the exception of high speed steels at this stage.
Hardening and Tempering parameters can be tailored to material manufacturer's specification or clients specific instructions.

There is no need for clients to hold back work for weekend processing

PICK UP & DELIVERY SERVICE IN THE GREATER AUCKLAND AREA IS NOW AVAILABLE.
PHONE : (09) 270 1190 or (09) 270 3390
FAX       :  (09) 270 1191


Work received before 10am on a working day (Monday - Friday) will have delivery times as follows:-

NITRIDING / NITRO-CARBURISING of
P20,H13,THG 2000,V810,4140,4340,4130,M261,EN41B
Standard run................Next working day

HARDENING & DOUBLE TEMPERING of
K110,D2,Rigor,A2,Orvar,W302,H13,Sleipner,K340,Stavax,M310,M340,AISI 420,AISI 440,Calmax,Viking / Chipper,A6,Vanadis 4,Vanadis 6, Vanadis 10.
Within 2 Working days

HARDENING & TEMPERING of
K600,2767,EN 30B,K460,O1,K455,S1,P20,4140,4340,SPRING STEEL,GAUGE PLATE,
SILVER STEEL
Next working day

CARBURISING / CASE HARDENING of
E110,E200,E230,EN36A,EN39B,8620,2764,Carbon hollow bar,Bisalloy 80,AISI 1012,1214
Standard case depth (0.025 - 0.030 inches)...........Within 2 Working Days

STRESS RELIEVING;TEMPERING;CRYOGENIC TREATMENT
Next working day

PRECIPITATION HARDENING of
N700,17-4PH,CORRAX,15-5PH
Next working day

PLASMA / ION NITRIDING
Please discuss as process times will vary according to case depth requirement.

NOTE: WORK WHICH REQUIRES ASSEMBLING, SPECIAL JIGS AND
           FIXTURES, AND CLEANING, MAY TAKE LONGER TO PROCESS.


For any enquiries please contact us on Auckland (09) 270 1190,(09) 270 3390,
Christchurch (03) 348 4140 or
email us should you want further details on these services.


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