North American Softwoods Mechanical Properties Chart

North American Softwoods

Cedar, Aromatic Red – North America

Specific Gravity: 0.47

Hardness: Medium

Strength: Very Weak

Bendability: Very Low

Tangential Stability: 5.2%

Radial Stability: 3.3%

Hand Tools: Easy

Power Tools: Very Easy

Gluing: Good

Finishing: Good

Common Uses: Boxes, chests, liners for chests and storage cabinets, pencils, archery bows, fence posts, Christmas trees.

Comments: Resists decay. Has strong but pleasant odor. Despite folklore, there is no evidence that odor or wood repels insects. Not a true cedar, member of the Juniper family.

Cedar, Aromatic Red

Cedar, Western Red – Western North America

Specific Gravity: 0.32

Hardness: Very Soft

Strength: Very Weak

Bendability: Low

Tangential Stability: 5.0%

Radial Stability: 2.4%

Hand Tools: Easy

Power Tools: Very Easy

Gluing: Excellent

Finishing: Good

Common Uses: Box and chest liners, doors, windows, trim, siding, shingles, beehives, outdoor furniture and construction.

Comments: Brittle, splits easily. Resists decay. Wood has slight fragrance thought to repel insects. Acid in wood attacks iron and steel fasteners. Not a true cedar, member of the Cypress family. Sawdust is a potential sensitizer.

Cedar, Western Red

Cypress – Southeastern North America

Specific Gravity: 0.46

Hardness: Soft

Strength: Medium

Bendability: Low

Tangential Stability: 6.7%

Radial Stability: 3.5%

Hand Tools: Very Easy

Power Tools: Easy

Gluing: Good

Finishing: Poor

Common Uses: Outdoor and informal furniture, boats, liners for closets and chests, shingles, outdoor construction.

Comments: Decay resistant, suitable for outdoor construction and ground contact. Sometimes mistakenly grouped with hardwoods because some species, particularly the Bald Cypress, lose their leaves in winter.

Cypress

Fir, Douglas – Western North America

Specific Gravity: 0.48

Hardness: Soft

Strength: Very Strong

Bendability: Very Low

Tangential Stability: 7.3%

Radial Stability: 4.5%

Hand Tools: Easy

Power Tools: Very Easy

Gluing: Good

Finishing: Difficult

Common Uses: Construction, windows, doors, trim, flooring, boats, docks, mine timbers, plywood, Christmas trees.

Comments: Dominant tree in Pacific Northwest America. More dimensional lumber and plywood is made in North America from this species than any other. Sawdust is a potential irritant.

Fir, Douglas

Hemlock – North America

Specific Gravity: 0.45

Hardness: Soft

Strength: Strong

Bendability: Medium

Tangential Stability: 7.9%

Radial Stability: 4.3%

Hand Tools: Very Easy

Power Tools: Very Easy

Gluing: Excellent

Finishing: Excellent

Common Uses: Construction lumber, papermaking, broom handles, plywood.

Comments: Takes paint well; good choice for siding. Extremely long-lived tree, grows very large; hemlocks in the Appalachian mountains produce more lumber per tree than any other in eastern North America. Member of the pine (Pinaceae) family, no relation to the poisonous herb.

Hemlock

Pine, Eastern White – Northeastern North America

Specific Gravity: 0.35

Hardness: Very Soft

Strength: Weak

Bendability: Very Low

Tangential Stability: 7.4%

Radial Stability: 4.1%

Hand Tools: Very Easy

Power Tools: Easy

Gluing: Good

Finishing: Excellent

Common Uses: Informal furniture, carving, trim, light construction, boats.

Comments: The tallest tree in eastern North America. In colonial times (1600s and 1700s), wood was prized for masts of sailing ships. Extremely tall trees were marked with a "broad arrow" and reserved for use by the British Royal Navy. Still commercially important, but overuse has depleted supply.

Pine, Eastern White

Pine, Ponderosa – Western North America

Specific Gravity: 0.40

Hardness: Very Soft

Strength: Weak

Bendability: Low

Tangential Stability: 6.2%

Radial Stability: 3.9%

Hand Tools: Easy

Power Tools: Very Easy

Gluing: Adequate

Finishing: Good

Common Uses: Construction lumber, trim, paneling, doors, windows, boxes, informal furniture.

Comments: Also known as "Knotty Pine." Knots are plentiful in irregular grain, but are usually tight and sound. Highly resinous, resin builds up on cutters, wood must be sealed before finishing.

Pine, Ponderosa

Pine, Sugar – Western North America

Specific Gravity: 0.36

Hardness: Very Soft

Strength: Very Weak

Bendability: Very Low

Tangential Stability: 5.6%

Radial Stability: 2.9%

Hand Tools: Easy

Power Tools: Very Easy

Gluing: Excellent

Finishing: Good

Common Uses: Informal furniture, carving, trim, boxes, toys, musical instruments, boats, light construction.

Comments: Virgin lumber is clear with a fine texture and produces some of the most valuable lumber in North America. Second-growth lumber is much coarser and has many knots.

Pine, Sugar

Pine, Southern Yellow – Southern North America

Specific Gravity: 0.59

Hardness: Medium

Strength: Very Strong

Bendability: Very Low

Tangential Stability: 6.1%

Radial Stability: 2.1%

Hand Tools: Easy

Power Tools: Easy

Gluing: Good

Finishing: Adequate

Common Uses: Heavy and light construction, exterior trim, flooring, boats, woodenware, utility furniture.

Comments: Widely-used construction wood owing to hardness and strength. Wood is resinous, clogs blades and cutters. Resin is used to produce pitch and turpentine. Once an important resource for shipbuilding.

Pine, Southern Yellow

Redwood – Western North America

Specific Gravity: 0.35

Hardness: Very Soft

Strength: Weak

Bendability: Low

Tangential Stability: 4.9%

Radial Stability: 2.2%

Hand Tools: Very Easy

Power Tools: Very Easy

Gluing: Excellent

Finishing: Good

Common Uses: Outdoor and informal furniture, construction, decking, coffins, vats, siding, shingles, veneer.

Comments: Also called "Sequoia." Trees are up to 350 feet (106 meters) high and 2,200 years old. Stumps produce "burl" figure. Lack of resin makes wood less likely to burn than other softwoods. Resists decay.

Redwood

Spruce, Sitka – Western North America

Specific Gravity: 0.407

Hardness: Very Soft

Strength: Medium

Bendability: High

Tangential Stability: 7.5%

Radial Stability: 4.3%

Hand Tools: Easy

Power Tools: Easy

Gluing: Excellent

Finishing: Excellent

Common Uses: Construction, boats, oars, airplanes and gliders, musical instruments, piano soundboards, trim, boxes.

Comments: Very high strength to weight ratio, especially when growth rings are closely spaced. Highly resonant; individual boards sound a single clear note when struck. Sawdust is a potential irritant.

Spruce, Sitka
chisel edge geometry

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