Ulmus Campestris (English elm)


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Scientific Name
Ulmus campestris

Trade Name
English elm

Family Name

Common Names
Elm, English elm, Nave Elm, Red Elm, Vanlig Alm

Regions of Distribution
Western Europe

Countries of Distribution  [VIEW MAP]
United Kingdom

Common Uses
Bedroom suites, Bent Parts, Boat building, Cabinetmaking, Canoes, Caskets, Chairs, Decorative veneer, Dining-room furniture, Docks, Dockwork, Domestic flooring, Drawer sides, Figured veneer, Fine furniture, Flooring, Furniture , Harbor work, Kitchen cabinets, Lifeboats, Living-room suites, Marine construction, Office furniture, Parquet flooring, Radio – stereo – TV cabinets, Shipbuilding, Sub-flooring, Turnery, Utility furniture, Veneer, Wharf construction

Environmental Profile

Status has not been officially assessed

Heartwood Color

Brown
Yellow
Green
Brown

Dull

Sapwood Color

Brown
Red
Clearly differentiated from the heartwood

Grain

Figure
Crossed
Irregular

 

Irregular
Crossed

Produces attrative figure

Texture

Medium
Fine
Coarse

Luster

Medium

Natural Durability

Perishable
Durable
Non-durable
Very little natural resistance
Susceptible to attack by fungi and termites

Odor

Has an odor
No specific smell or taste

Kiln Schedules

Schedule A: United Kingdom

Drying Defects

Checking
Distortion
Expect splits
Distortion (twist/warp) is likely
Collapse
Checking

Ease of Drying

Thick Stock Requires Care
End-Coating
Moderately Difficult to Difficult
Dries at a fairly rapid rate

Closely spaced stickers and heavy weighting of piles have been suggested to reduce drying degrade

Tree Size

Bole length is 30-40 m
Tree height is 10-20 m
Tree height is 20-30 m
Trunk diameter is 100-150 cm
Trunk diameter is 150-200 cm

Certified Source

Certified Source

Comments
Often located in hedgerows. Wood at center is often unsound

Blunting Effect

Blunting effect on machining is moderate

Boring

Very good to excellent results
Fairly easy to very easy
Difficult

Carving

Gluing is often difficult

Cutting Resistance

Easy to saw
Difficult to saw

Tends to bind on saws.

Gluing

Fairly Easy to Very Easy
Fair to Good Results
Carefully Controlled Conditions
Good properties

Mortising

Difficult to mortise

Moulding

Fair to Good Results
Fairly Easy to Very Easy
Requires very sharp cutting edges

Tends to pick-up in moulding operations.

Movement in Service

Fair to Good Stability – Medium Movement
Excellent Stability – Small Movement
Moderate dimensional stability after seasoning
Medium

Nailing

Fair to Good Results
Fairly Easy to Very Easy
Satisfactory nailing properties
Material is reported to nail without splitting

Planing

Fair to Good Results
Fairly Difficult to Very Difficult
Woolly
Difficult to plane

Resistance to Impregnation

Sapwood is permeable
Heartwood is moderately resistant

Response to Hand Tools

Cutting edges should be kept sharp to prevent torn rays

Routing & Recessing

Very sharp cutting edges are required to produce a smooth surface

Sanding

Fair to Good Results
Fairly Difficult to Very Difficult

Screwing

Fair to Good Results
Fairly Easy to Very Easy
Reported to screw without splitting

Turning

Very Good to Excellent Results
Fairly Easy to Very Easy

The material is rather difficult to turn and requires very sharp cutting edges for best results

Steam Bending
Team bending properties are rated as rather poor

Polishing

Very Good to Excellent Results
Fairly Easy to Very Easy
Fair to Good Results
High finish

Staining

Fairly Easy to Very Easy
Stains well

Varnishing

Very Good to Excellent Results

Strength Properties

Hardness (side grain) = medium
Crushing strength = low
Bending strength (MOR) = medium

High Density

Numerical Data

Item Green Dry English
Bending Strength 5302 8989 psi
Density 33 lbs/ft3
Hardness 804 lbs
Impact Strength 25 23 inches
Maximum Crushing Strength 2264 4545 psi
Shearing Strength 1715 psi
Stiffness 782 1049 1000 psi
Work to Maximum Load 9 10 inch-lbs/in3
Specific Gravity 0.53
Weight 37 32 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 6 %
Item Green Dry Metric
Bending Strength 372 632 kg/cm2
Density 528 kg/m3
Hardness 364 kg
Impact Strength 63 58 cm
Maximum Crushing Strength 159 319 kg/cm2
Shearing Strength 120 kg/cm2
Stiffness 54 73 1000 kg/cm2
Work to Maximum Load 0.63 0.70 cm-kg/cm3
Specific Gravity 0.53
Weight 592 512 kg/m3
Radial Shrinkage 4 %

References
HMSO, 1981. Handbook of Hardwoods, 2nd Edition. Revised by R.H. Farmer. Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, Buckinghamshire.

Lavers, G.M. 1966. The Strength Properties of Timbers. Forest Products Research Bulletin, No. 50. Ministry of Technology, Her Majesty’s Stationery Office, London.

Lincoln, W.A. World Woods in Color. Linden Publishing Co. Inc, Fresno, California